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Nippon Piston Ring Co., Ltd.

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  • Tokyo, JP
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Sliding member, manufacturing method thereof, and coating film
    • Patent number 11,946,010
    • Issue date Apr 2, 2024
    • Nippon Piston Ring Co., Ltd.
    • Takahiro Okazaki
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Combined oil ring
    • Patent number 11,873,780
    • Issue date Jan 16, 2024
    • Nippon Piston Ring Co., Ltd.
    • Masahiro Uchiumi
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Fusible plug
    • Patent number 11,859,766
    • Issue date Jan 2, 2024
    • Nippon Piston Ring Co., Ltd.
    • Hiroshi Takiguchi
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    Hard particle powder for sintered body
    • Patent number 11,846,009
    • Issue date Dec 19, 2023
    • Daido Steel Co., Ltd.
    • Iwane Nagase
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Piston ring
    • Patent number 11,739,840
    • Issue date Aug 29, 2023
    • Nippon Piston Ring Co., Ltd.
    • Kyoichi Ikeya
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Sliding member
    • Patent number 11,692,248
    • Issue date Jul 4, 2023
    • Nippon Piston Ring Co., Ltd.
    • Noriaki Chida
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Iron-based sintered alloy valve seat for internal combustion engine
    • Patent number 11,549,408
    • Issue date Jan 10, 2023
    • Nippon Piston Ring Co., Ltd.
    • Ayato Oikawa
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Sliding member and coating film
    • Patent number 11,293,548
    • Issue date Apr 5, 2022
    • Nippon Piston Ring Co., Ltd.
    • Takahiro Okazaki
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Coating film, manufacturing method therefor, and PVD apparatus
    • Patent number 11,261,519
    • Issue date Mar 1, 2022
    • Nippon ITF, Inc.
    • Hideki Moriguchi
    • B32 - LAYERED PRODUCTS
  • Information Patent Grant

    Sliding structure for internal combustion engine, method for contro...
    • Patent number 11,111,875
    • Issue date Sep 7, 2021
    • NIPPON PISTON RING CO., LTD.
    • Mitsuru Urabe
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Marker for use in living body and instrument set for inserting mark...
    • Patent number 11,051,904
    • Issue date Jul 6, 2021
    • NIPPON PISTON RING CO., LTD.
    • Hiroshi Matsushima
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Method for producing piston ring with recess
    • Patent number 11,047,479
    • Issue date Jun 29, 2021
    • Nippon Piston Ring Co., Ltd.
    • Kazuhiro Fujimura
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Combined oil ring
    • Patent number 10,724,636
    • Issue date Jul 28, 2020
    • Nippon Piston Ring Co., Ltd.
    • Masataka Kawasaki
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Titanium alloy
    • Patent number 10,669,613
    • Issue date Jun 2, 2020
    • Nippon Piston Ring Co., Ltd.
    • Shunsuke Takeguchi
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Piston ring
    • Patent number 10,619,739
    • Issue date Apr 14, 2020
    • Nippon Piston Ring Co., Ltd.
    • Takuya Ozaki
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Valve seat insert excellent in wear resistance made of iron-base si...
    • Patent number 10,605,374
    • Issue date Mar 31, 2020
    • Nippon Piston Ring Co., Ltd.
    • Seisuke Takaki
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Implant and method for producing implant
    • Patent number 10,583,217
    • Issue date Mar 10, 2020
    • Nippon Piston Ring Co., Ltd.
    • Yoshiki Ishikawa
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Piston ring and manufacturing method therefor
    • Patent number 10,578,214
    • Issue date Mar 3, 2020
    • Nippon Piston Ring Co., Ltd.
    • Takuya Ozaki
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Combined oil ring
    • Patent number 10,520,085
    • Issue date Dec 31, 2019
    • Nippon Piston Ring Co., Ltd.
    • Yasuyuki Murata
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method for producing piston ring with recess
    • Patent number 10,514,097
    • Issue date Dec 24, 2019
    • Nippon Piston Ring Co., Ltd.
    • Kazuhiro Fujimura
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Coating film, manufacturing method for same, and PVD device
    • Patent number 10,457,885
    • Issue date Oct 29, 2019
    • Nippon ITF, Inc.
    • Hideki Moriguchi
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Highly wear-resistant valve seat for use in internal combustion engine
    • Patent number 10,428,700
    • Issue date Oct 1, 2019
    • Nippon Piston Ring Co., Ltd.
    • Satoshi Ikemi
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Coating film, manufacturing method for same, and PVD device
    • Patent number 10,428,416
    • Issue date Oct 1, 2019
    • Nippon ITF, Inc.
    • Hideki Moriguchi
    • B82 - NANO-TECHNOLOGY
  • Information Patent Grant

    Piston ring
    • Patent number 10,385,971
    • Issue date Aug 20, 2019
    • Nippon Piston Ring Co., Ltd.
    • Noriaki Chida
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Highly heat conductive piston ring for internal combustion engine
    • Patent number 10,344,860
    • Issue date Jul 9, 2019
    • Nippon Piston Ring Co., Ltd.
    • Tsugane Hirase
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Multi-piece oil ring
    • Patent number 10,330,198
    • Issue date Jun 25, 2019
    • Nippon Piston Ring Co., Ltd.
    • Atsushi Chiba
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Assembly of internal combustion engine valve and valve seat
    • Patent number 10,287,933
    • Issue date May 14, 2019
    • Nippon Piston Ring Co., Ltd.
    • Satoshi Ikemi
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Valve seat insert for internal combustion engine having excellent w...
    • Patent number 10,273,838
    • Issue date Apr 30, 2019
    • Nippon Piston Ring Co., Ltd.
    • Satoshi Ikemi
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Piston ring and manufacturing method therefor
    • Patent number 10,087,513
    • Issue date Oct 2, 2018
    • Nippon Piston Ring Co., Ltd.
    • Takuya Ozaki
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Multi-piece oil ring
    • Patent number 10,030,772
    • Issue date Jul 24, 2018
    • Nippon Piston Ring Co., Ltd.
    • Atsushi Chiba
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    WINDOW SCREEN FOR AUTOMOBILE
    • Publication number 20240351406
    • Publication date Oct 24, 2024
    • NIPPON PISTON RING CO., LTD
    • Hiroshi TAKIGUCHI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    IRON-BASED SINTERED ALLOY VALVE SEAT INSERT FOR INTERNAL COMBUSTION...
    • Publication number 20240344467
    • Publication date Oct 17, 2024
    • NIPPON PISTON RING CO., LTD
    • Yuji NAGAOKA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    SLIDING MEMBER, MANUFACTURING METHOD THEREOF, AND COATING FILM
    • Publication number 20240159313
    • Publication date May 16, 2024
    • NIPPON PISTON RING CO., LTD
    • Hiroyuki SUGIURA
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    METHOD FOR PRODUCING TITANIUM ALLOY SINTERED PART, AND TITANIUM ALL...
    • Publication number 20240100594
    • Publication date Mar 28, 2024
    • Nippon Piston Ring Co., Ltd.
    • Masahiro KIMURA
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    Method For Manufacturing Three-Dimensional Object, Three-Dimensiona...
    • Publication number 20240001442
    • Publication date Jan 4, 2024
    • NIPPON PISTON RING CO., LTD.
    • Masahiro KIMURA
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    HARD PARTICLE POWDER FOR SINTERED BODY
    • Publication number 20230038356
    • Publication date Feb 9, 2023
    • DAIDO STEEL CO., LTD.
    • Iwane NAGASE
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    SLIDING MEMBER, MANUFACTURING METHOD THEREOF, AND COATING FILM
    • Publication number 20220396746
    • Publication date Dec 15, 2022
    • NIPPON PISTON RING CO., LTD
    • Takahiro OKAZAKI
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    FUSIBLE PLUG
    • Publication number 20220243872
    • Publication date Aug 4, 2022
    • Nippon Piston Ring Co., Ltd.
    • Hiroshi TAKIGUCHI
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Application

    Medical Marker
    • Publication number 20220096199
    • Publication date Mar 31, 2022
    • NIPPON PISTON RING CO., LTD.
    • Takasumi KUBO
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    COMBINED OIL RING
    • Publication number 20220090558
    • Publication date Mar 24, 2022
    • NIPPON PISTON RING CO., LTD
    • Masahiro UCHIUMI
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    PISTON RING
    • Publication number 20220003316
    • Publication date Jan 6, 2022
    • NIPPON PISTON RING CO., LTD
    • Kyoichi IKEYA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    IRON-BASED SINTERED ALLOY VALVE SEAT FOR INTERNAL COMBUSTION ENGINE
    • Publication number 20210215071
    • Publication date Jul 15, 2021
    • NIPPON PISTON RING CO., LTD
    • Ayato OIKAWA
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    SLIDING STRUCTURE FOR INTERNAL COMBUSTION ENGINE, METHOD FOR CONTRO...
    • Publication number 20200325844
    • Publication date Oct 15, 2020
    • Nippon Piston Ring Co., Ltd.
    • Mitsuru URABE
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    SLIDING MEMBER
    • Publication number 20200299812
    • Publication date Sep 24, 2020
    • NIPPON PISTON RING CO., LTD
    • Noriaki CHIDA
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    SINTERED FERROUS ALLOY VALVE SEAT EXHIBITING EXCELLENT THERMAL COND...
    • Publication number 20200284173
    • Publication date Sep 10, 2020
    • Nippon Piston Ring Co., Ltd.
    • Ayato OIKAWA
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    SLIDING MEMBER AND COATING FILM
    • Publication number 20200217416
    • Publication date Jul 9, 2020
    • NIPPON PISTON RING CO., LTD
    • Takahiro OKAZAKI
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    METHOD FOR PRODUCING PISTON RING WITH RECESS
    • Publication number 20200080638
    • Publication date Mar 12, 2020
    • Nippon Piston Ring Co., Ltd.
    • Kazuhiro FUJIMURA
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    MEDICAL MEMBER AND METHOD FOR TREATING SOFT TISSUE
    • Publication number 20190358021
    • Publication date Nov 28, 2019
    • Nippon Piston Ring Co., Ltd.
    • Takasumi KUBO
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    MARKER FOR USE IN LIVING BODY AND INSTRUMENT SET FOR INSERTING MARK...
    • Publication number 20190008605
    • Publication date Jan 10, 2019
    • Nippon Piston Ring Co., Ltd.
    • Hiroshi MATSUSHIMA
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    COATING FILM, MANUFACTURING METHOD THEREFOR, AND PVD APPARATUS
    • Publication number 20180371608
    • Publication date Dec 27, 2018
    • NIPPON ITF, INC.
    • Hideki MORIGUCHI
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    MULTI-PIECE OIL RING
    • Publication number 20180363778
    • Publication date Dec 20, 2018
    • Nippon Piston Ring Co., Ltd.
    • Atsushi Chiba
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON RING AND MANUFACTURING METHOD THEREFOR
    • Publication number 20180180181
    • Publication date Jun 28, 2018
    • NIPPON PISTON RING CO., LTD
    • Takuya OZAKI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON RING
    • Publication number 20180180182
    • Publication date Jun 28, 2018
    • NIPPON PISTON RING CO., LTD.
    • Takuya OZAKI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    VALVE SEAT INSERT EXCELLENT IN WEAR RESISTANCE MADE OF IRON-BASE SI...
    • Publication number 20180149280
    • Publication date May 31, 2018
    • NIPPON PISTON RING CO., LTD.
    • Seisuke TAKAKI
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    IMPLANT AND METHOD FOR PRODUCING IMPLANT
    • Publication number 20180093012
    • Publication date Apr 5, 2018
    • NIPPON PISTON RING CO., LTD.
    • Yoshiki ISHIKAWA
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    COMBINED OIL RING
    • Publication number 20180051806
    • Publication date Feb 22, 2018
    • NIPPON PISTON RING CO., LTD
    • Yasuyuki MURATA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    METHOD FOR PRODUCING PISTON RING WITH RECESS
    • Publication number 20170335965
    • Publication date Nov 23, 2017
    • Nippon Piston Ring Co., Ltd.
    • Kazuhiro Fujimura
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    TITANIUM ALLOY
    • Publication number 20170327928
    • Publication date Nov 16, 2017
    • NIPPON PISTON RING CO., LTD.
    • Shunsuke TAKEGUCHI
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    COATING FILM, MANUFACTURING METHOD FOR SAME, AND PVD DEVICE
    • Publication number 20170306257
    • Publication date Oct 26, 2017
    • NIPPON ITF, INC.
    • Hideki MORIGUCHI
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    COATING FILM, MANUFACTURING METHOD FOR SAME, AND PVD DEVICE
    • Publication number 20170283935
    • Publication date Oct 5, 2017
    • NIPPON ITF, INC.
    • Hideki MORIGUCHI
    • B82 - NANO-TECHNOLOGY

Trademarklast 30 trademarks

  • Information Trademark

    79388175
    • Serial number 79388175
    • Filing date Sep 29, 2023
    • KABUSHIKI KAISHA RIKEN
    • 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
  • Information Trademark

    79388176 - NPR-RIKEN
    • Serial number 79388176
    • Filing date Sep 29, 2023
    • KABUSHIKI KAISHA RIKEN
    • 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
  • Information Trademark

    87943269 - NPR NIPPON PISTON RING
    • Serial number 87943269
    • Filing date May 31, 2018
    • NIPPON PISTON RING CO., LTD.
    • 5 - Pharmaceutical and veterinary preparations
  • Information Trademark

    87475470 - VVV
    • Serial number 87475470
    • Registration number 6102430
    • Filing date Jun 5, 2017
    • NIPPON PISTON RING CO., LTD.
    • 10 - Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth
  • Information Trademark

    87475336 - IAT
    • Serial number 87475336
    • Registration number 6102429
    • Filing date Jun 5, 2017
    • NIPPON PISTON RING CO., LTD.
    • 10 - Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth
  • Information Trademark

    86566224 - NIFREET
    • Serial number 86566224
    • Registration number 5228587
    • Filing date Mar 17, 2015
    • NIPPON PISTON RING CO., LTD.
    • 6 - Common metals and their alloys
  • Information Trademark

    78974091 - NPR NIPPON PISTON RING
    • Serial number 78974091
    • Registration number 3462396
    • Filing date Sep 14, 2006
    • Nippon Piston Ring Co., Ltd.
    • 7 - Machines and machine tools
  • Information Trademark

    78601853 - NPR
    • Serial number 78601853
    • Registration number 3172402
    • Filing date Apr 5, 2005
    • Nippon Piston Ring Co., Ltd.
    • 7 - Machines and machine tools
  • Information Trademark

    74270798 - N P R J
    • Serial number 74270798
    • Registration number 1745531
    • Filing date Apr 30, 1992
    • Nippon Piston Ring Co., Ltd.
    • 7 - Machines and machine tools
  • Information Trademark

    74065213 - NIPPON PISTON RING
    • Serial number 74065213
    • Registration number 1748135
    • Filing date Jun 4, 1990
    • Nippon Piston Ring Co., Ltd.
    • 7 - Machines and machine tools
  • Information Trademark

    73568708 - NPR
    • Serial number 73568708
    • Registration number 1418943
    • Filing date Nov 15, 1985
    • Nippon Piston Ring Co., Ltd.
    • 7 - Machines and machine tools
  • Information Trademark

    73568709 - NPR NIPPON PISTON RING
    • Serial number 73568709
    • Registration number 1412033
    • Filing date Nov 15, 1985
    • Nippon Piston Ring Co., Ltd.
    • 7 - Machines and machine tools
  • Information Trademark

    73403280 - NIPPON PISTON RING
    • Serial number 73403280
    • Registration number 1304712
    • Filing date Nov 19, 1982
    • Nippon Piston Ring Co., Ltd.
    • 7 - Machines and machine tools
  • Information Trademark

    73400794 - NPRJ
    • Serial number 73400794
    • Registration number 1393786
    • Filing date Oct 14, 1982
    • NIPPON PISTON RING CO., LTD.
    • 7 - Machines and machine tools
  • Information Trademark

    72415430 - NIPPON PISTON RING
    • Serial number 72415430
    • Registration number 991984
    • Filing date Feb 11, 1972
    • NIPPON PISTON RING CO., LTD.
    • 7 - Machines and machine tools