TREA

Nidec Corporation

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  • Kyoto, JP
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Drive apparatus
    • Patent number 12,218,559
    • Issue date Feb 4, 2025
    • Nidec Corporation
    • Daiki Shimogai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Sensor and power transmission device
    • Patent number 12,216,012
    • Issue date Feb 4, 2025
    • Nidec-Shimpo Corporation
    • Daisuke Takagi
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Motor
    • Patent number 12,212,200
    • Issue date Jan 28, 2025
    • Nidec Corporation
    • Yuki Ishikawa
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Motor control device, motor control method, motor module, and elect...
    • Patent number 12,202,554
    • Issue date Jan 21, 2025
    • Nidec Corporation
    • Shuji Endo
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Control device, electric power steering device, and control method
    • Patent number 12,195,107
    • Issue date Jan 14, 2025
    • Nidec Corporation
    • Shuji Endo
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Annular body, wave reducer, and robot
    • Patent number 12,196,306
    • Issue date Jan 14, 2025
    • Nidec-Shimpo Corporation
    • Daisuke Takagi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Drive device and electric vehicle
    • Patent number 12,187,383
    • Issue date Jan 7, 2025
    • Nidec Corporation
    • Tadahiro Kuramoto
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    External gear, wave decelerator, and robot
    • Patent number 12,186,902
    • Issue date Jan 7, 2025
    • Nidec-Shimpo Corporation
    • Daisuke Takagi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Motor
    • Patent number 12,191,733
    • Issue date Jan 7, 2025
    • Nidec Corporation
    • Shuji Iwasaki
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Blower device
    • Patent number 12,180,971
    • Issue date Dec 31, 2024
    • Nidec Corporation
    • Yuta Tokuno
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Motor
    • Patent number 12,184,130
    • Issue date Dec 31, 2024
    • Nidec Corporation
    • Tsuyoshi Yasumura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Drive device and vehicle
    • Patent number 12,184,147
    • Issue date Dec 31, 2024
    • Nidec Corporation
    • Daiki Shimogai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Drive device and vehicle
    • Patent number 12,184,154
    • Issue date Dec 31, 2024
    • Nidec Corporation
    • Keigo Nakamura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Rotor and motor
    • Patent number 12,176,761
    • Issue date Dec 24, 2024
    • Nidec Corporation
    • Tatsuki Shigeta
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Motor control device, motor control method, motor module, and elect...
    • Patent number 12,172,706
    • Issue date Dec 24, 2024
    • Nidec Corporation
    • Shuji Endo
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Interior permanent magnet motor
    • Patent number 12,176,760
    • Issue date Dec 24, 2024
    • Nidec Corporation
    • Yabo Hu
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Cooling apparatus and cooling system
    • Patent number 12,178,008
    • Issue date Dec 24, 2024
    • Nidec Corporation
    • Takehito Tamaoka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Stator, motor, and method for manufacturing stator
    • Patent number 12,166,386
    • Issue date Dec 10, 2024
    • Nidec Corporation
    • Hibiki Takada
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Vibration motor with bearing portion and air passage and air hole
    • Patent number 12,166,396
    • Issue date Dec 10, 2024
    • Nidec Corporation
    • Atsunori Hirata
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Heatsink and cooling device
    • Patent number 12,163,746
    • Issue date Dec 10, 2024
    • Nidec Corporation
    • Hidehiko Hidaka
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Vibration motor with circuit board and lead wire extending in a rec...
    • Patent number 12,166,397
    • Issue date Dec 10, 2024
    • Nidec Corporation
    • Atsunori Hirata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Heatsink and cooling device
    • Patent number 12,165,953
    • Issue date Dec 10, 2024
    • Nidec Corporation
    • Hidehiko Hidaka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Cooling device
    • Patent number 12,158,313
    • Issue date Dec 3, 2024
    • Nidec Corporation
    • Kazuhiro Nishikawa
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Inspection jig and inspection device
    • Patent number 12,158,480
    • Issue date Dec 3, 2024
    • Nidec-Read Corporation
    • Kohei Tsumura
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Blower
    • Patent number 12,158,153
    • Issue date Dec 3, 2024
    • Nidec Corporation
    • Kazuhiro Inouchi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Motor
    • Patent number 12,149,125
    • Issue date Nov 19, 2024
    • Nidec Corporation
    • Tomoya Ueda
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Liquid feeder and cooling unit
    • Patent number 12,137,537
    • Issue date Nov 5, 2024
    • Nidec Corporation
    • Toshihiko Tokeshi
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Contact, inspection jig, inspection device, and method of manufactu...
    • Patent number 12,135,336
    • Issue date Nov 5, 2024
    • Nidec-Read Corporation
    • Norihiro Ota
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Drive apparatus
    • Patent number 12,135,084
    • Issue date Nov 5, 2024
    • Nidec Corporation
    • Shuhei Nakamatsu
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Actuator
    • Patent number 12,135,466
    • Issue date Nov 5, 2024
    • Nidec Corporation
    • Takuro Iguchi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    BLOWER AND VACUUM CLEANER
    • Publication number 20250043791
    • Publication date Feb 6, 2025
    • NIDEC CORPORATION
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    MOTOR AND BLOWER
    • Publication number 20250038612
    • Publication date Jan 30, 2025
    • NIDEC CORPORATION
    • Masafumi FUJIMOTO
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ROTOR, MOTOR, AND METHOD FOR MANUFACTURING ROTOR
    • Publication number 20250038597
    • Publication date Jan 30, 2025
    • NIDEC CORPORATION
    • Mitsuhiro TAKEMOTO
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    FLIGHT VEHICLE AND FLIGHT VEHICLE SYSTEM
    • Publication number 20250019099
    • Publication date Jan 16, 2025
    • NIDEC CORPORATION
    • Naoki FUJITA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    SIGNAL GENERATION DEVICE AND ELEVATOR
    • Publication number 20250020443
    • Publication date Jan 16, 2025
    • NIDEC CORPORATION
    • Shuhei MURASE
    • G01 - MEASURING TESTING
  • Information Patent Application

    REFRIGERANT CIRCULATION DEVICE
    • Publication number 20250016956
    • Publication date Jan 9, 2025
    • NIDEC CORPORATION
    • Toshihiko TOKESHI
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    CONTROL DEVICE, ELECTRIC POWER STEERING DEVICE, AND CONTROL METHOD
    • Publication number 20250010915
    • Publication date Jan 9, 2025
    • NIDEC CORPORATION
    • Shuji ENDO
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    MOTOR CONTROL DEVICE AND MOTOR
    • Publication number 20250015739
    • Publication date Jan 9, 2025
    • NIDEC CORPORATION
    • Shuji ENDO
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    CONTROL DEVICE AND STEERING DEVICE
    • Publication number 20250002076
    • Publication date Jan 2, 2025
    • NIDEC CORPORATION
    • Shuji ENDO
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    BASE PLATE, MOTOR, AND DISK DRIVE DEVICE
    • Publication number 20250006227
    • Publication date Jan 2, 2025
    • NIDEC CORPORATION
    • Michihiro ITO
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    CONTROL DEVICE, ELECTRIC POWER STEERING DEVICE, AND CONTROL METHOD
    • Publication number 20250002074
    • Publication date Jan 2, 2025
    • NIDEC CORPORATION
    • Shuji ENDO
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    COUPLING DEVICE AND REFRIGERANT CIRCULATION DEVICE
    • Publication number 20250003656
    • Publication date Jan 2, 2025
    • NIDEC CORPORATION
    • Taku MURAKAMI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    CONTROL DEVICE, ELECTRIC POWER STEERING DEVICE, AND DRIVE DEVICE
    • Publication number 20250002075
    • Publication date Jan 2, 2025
    • NIDEC CORPORATION
    • Shuji ENDO
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    MOTOR
    • Publication number 20250007357
    • Publication date Jan 2, 2025
    • NIDEC CORPORATION
    • Xiuquan DONG
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    SYSTEM
    • Publication number 20250003648
    • Publication date Jan 2, 2025
    • NIDEC CORPORATION
    • Toshihiko TOKESHI
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    MOTOR
    • Publication number 20240421651
    • Publication date Dec 19, 2024
    • NIDEC CORPORATION
    • Xiuquan DONG
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    JOINT UNIT
    • Publication number 20240401891
    • Publication date Dec 5, 2024
    • NIDEC CORPORATION
    • Koji HATANAKA
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    ELECTRIC POWER UNIT
    • Publication number 20240405645
    • Publication date Dec 5, 2024
    • NIDEC CORPORATION
    • Hiroki AKAISHI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ROTARY ELECTRIC MACHINE
    • Publication number 20240396416
    • Publication date Nov 28, 2024
    • NIDEC CORPORATION
    • Ryoma SASAKI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    SYNCHRONOUS RELUCTANCE MOTOR
    • Publication number 20240396389
    • Publication date Nov 28, 2024
    • NIDEC CORPORATION
    • Pei-Chun SHIH
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    BASE PLATE, SPINDLE MOTOR, DISK DRIVE DEVICE, AND METHOD FOR MANUFA...
    • Publication number 20240386909
    • Publication date Nov 21, 2024
    • NIDEC CORPORATION
    • Michihiro ITO
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    AUTONOMOUS TRAVELING DEVICE AND AUTONOMOUS TRAVELING DEVICE CONTROL...
    • Publication number 20240385624
    • Publication date Nov 21, 2024
    • NIDEC CORPORATION
    • Jun NISHIYAMA
    • G05 - CONTROLLING REGULATING
  • Information Patent Application

    ROTOR AND MOTOR
    • Publication number 20240388149
    • Publication date Nov 21, 2024
    • Nidec Motion Control Technology (Guangdong) Co., LTD
    • Sheng-Chan YEN
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    MOTOR CONTROL DEVICE
    • Publication number 20240388235
    • Publication date Nov 21, 2024
    • NIDEC CORPORATION
    • Kotaro KATAOKA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    BASE PLATE, SPINDLE MOTOR, DISK DRIVE DEVICE, AND BASE PLATE MANUFA...
    • Publication number 20240379122
    • Publication date Nov 14, 2024
    • NIDEC CORPORATION
    • Genya ITAGAKI
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    MOTOR, FLUID SUCTION DEVICE, AND CLEANER
    • Publication number 20240380285
    • Publication date Nov 14, 2024
    • NIDEC CORPORATION
    • Ryoji YAMAUCHI
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    POWER CONVERSION DEVICE AND DRIVE DEVICE
    • Publication number 20240373603
    • Publication date Nov 7, 2024
    • NIDEC CORPORATION
    • Satoshi HIROTA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    MOTOR
    • Publication number 20240364153
    • Publication date Oct 31, 2024
    • NIDEC CORPORATION
    • Shintaro SAEKI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ROTOR AND MOTOR
    • Publication number 20240364156
    • Publication date Oct 31, 2024
    • NIDEC CORPORATION
    • Ta-Yin LUO
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    AUTONOMOUS TRAVEL DEVICE AND AUTONOMOUS TRAVEL DEVICE CONTROL METHOD
    • Publication number 20240361134
    • Publication date Oct 31, 2024
    • NIDEC CORPORATION
    • Jun NISHIYAMA
    • G08 - SIGNALLING

Trademarklast 30 trademarks

  • Information Trademark

    97755756 - KINEMATEX
    • Serial number 97755756
    • Registration number 7547342
    • Filing date Jan 16, 2023
    • NIDEC-SHIMPO CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79355611 - E-EXTENDER
    • Serial number 79355611
    • Filing date Jun 21, 2022
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79332606 - NIDEC
    • Serial number 79332606
    • Registration number 7215192
    • Filing date Jun 24, 2021
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    88843970 - NIDEC INSIDE
    • Serial number 88843970
    • Registration number 6406514
    • Filing date Mar 23, 2020
    • Nidec Corporation
    • 7 - Machines and machine tools
  • Information Trademark

    79223563 - SMARCTORY
    • Serial number 79223563
    • Registration number 5759780
    • Filing date Nov 16, 2016
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79239569 - WONDER SENSE
    • Serial number 79239569
    • Registration number 6015581
    • Filing date Aug 8, 2016
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79200195 - S-CART
    • Serial number 79200195
    • Registration number 5455577
    • Filing date Jun 6, 2016
    • NIDEC DRIVE TECHNOLOGY CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79202135 - CORONEX
    • Serial number 79202135
    • Registration number 5510303
    • Filing date Jun 6, 2016
    • NIDEC DRIVE TECHNOLOGY CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79177984 - FLEXWAVE
    • Serial number 79177984
    • Registration number 5477538
    • Filing date Jul 17, 2015
    • NIDEC-SHIMPO CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79157312 - ULTRAFLO
    • Serial number 79157312
    • Registration number 4843385
    • Filing date Sep 8, 2014
    • NIDEC CORPORATION
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    86336336 - NRFEIS
    • Serial number 86336336
    • Registration number 4802221
    • Filing date Jul 14, 2014
    • NIDEC-READ CORPORATION
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    79132943 - KYORI
    • Serial number 79132943
    • Registration number 4594858
    • Filing date Mar 8, 2013
    • NIDEC-SHIMPO CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    85502451 - ULTRAFLO
    • Serial number 85502451
    • Registration number 4393103
    • Filing date Dec 22, 2011
    • NIDEC CORPORATION
    • 10 - Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth
  • Information Trademark

    79113009 - ULTRAFLO
    • Serial number 79113009
    • Registration number 4287371
    • Filing date Nov 22, 2011
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79115581 - ULTRAFLO
    • Serial number 79115581
    • Registration number 4344781
    • Filing date Nov 22, 2011
    • NIDEC CORPORATION
    • 28 - Games and playthings
  • Information Trademark

    79085183 - NIDEC
    • Serial number 79085183
    • Registration number 4000531
    • Filing date Dec 28, 2009
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79063397 - NIDEC READ
    • Serial number 79063397
    • Registration number 3725774
    • Filing date Jul 17, 2008
    • NIDEC CORPORATION
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    79060790 - ALL FOR DREAMS
    • Serial number 79060790
    • Registration number 3757719
    • Filing date Jun 13, 2007
    • NIDEC COPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79041487 - ULTRAFLO
    • Serial number 79041487
    • Registration number 3516620
    • Filing date Aug 9, 2006
    • NIDEC CORPORATION
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    79033255 - HIGHPER MAIN
    • Serial number 79033255
    • Filing date Jul 27, 2006
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79033269 - HIGHPER SLIM
    • Serial number 79033269
    • Filing date Jul 27, 2006
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79033261 - SLIDINGCONE
    • Serial number 79033261
    • Filing date Jul 27, 2006
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79033313 - HIGHPER HALF HIGHT
    • Serial number 79033313
    • Filing date Jul 27, 2006
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    79033314 - NBRX
    • Serial number 79033314
    • Registration number 3366146
    • Filing date Jul 27, 2006
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    78850853 - HIGHPER MOTOR
    • Serial number 78850853
    • Filing date Mar 31, 2006
    • NIDEC CORPORATION
    • 7 - Machines and machine tools
  • Information Trademark

    74333667 - FANSINK
    • Serial number 74333667
    • Registration number 1836087
    • Filing date Nov 23, 1992
    • Nidec Corporation
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    74176204 - ALPHA V
    • Serial number 74176204
    • Registration number 1697512
    • Filing date Jun 14, 1991
    • Nidec Corporation
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
  • Information Trademark

    74158498 - BETA V
    • Serial number 74158498
    • Registration number 1723564
    • Filing date Apr 18, 1991
    • Nidec Corporation
    • 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes