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Masato Sakai

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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric device outputting light, wind, heat or sound
    • Patent number 9,967,920
    • Issue date May 8, 2018
    • Hitachi Koki Co., Ltd.
    • Takafumi Itoh
    • F21 - LIGHTING
  • Information Patent Grant

    Nailer
    • Patent number D801145
    • Issue date Oct 31, 2017
    • Hitachi Koki Co., Ltd.
    • Yoshiki Aoki
    • D08 - Tools and hardware
  • Information Patent Grant

    Nailer
    • Patent number D800526
    • Issue date Oct 24, 2017
    • Hitachi Koki Co., Ltd.
    • Yoshiki Aoki
    • D08 - Tools and hardware
  • Information Patent Grant

    Electric device with surrounding protective frame
    • Patent number 9,693,470
    • Issue date Jun 27, 2017
    • Hitachi Koki Co., Ltd.
    • Takafumi Itoh
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Power tool
    • Patent number 9,505,120
    • Issue date Nov 29, 2016
    • Hitachi Koki Co., Ltd.
    • Yoshiki Aoki
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Floodlight
    • Patent number D744139
    • Issue date Nov 24, 2015
    • Hitachi Koki Co., Ltd.
    • Takafumi Itoh
    • D26 - Lighting
  • Information Patent Grant

    Portable electric driver
    • Patent number D735006
    • Issue date Jul 28, 2015
    • Hitachi Koki Co., Ltd.
    • Yoshiki Aoki
    • D08 - Tools and hardware
  • Information Patent Grant

    Radio receiver
    • Patent number D726142
    • Issue date Apr 7, 2015
    • Hitachi Koki Co., Ltd.
    • Takafumi Itoh
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Power tool
    • Patent number 8,087,556
    • Issue date Jan 3, 2012
    • Hitachi Koki Co., Ltd.
    • Katsuhiro Oomori
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Electric power tool
    • Patent number 7,681,661
    • Issue date Mar 23, 2010
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Electric power tool with cover
    • Patent number 7,665,541
    • Issue date Feb 23, 2010
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Engine blower
    • Patent number D591916
    • Issue date May 5, 2009
    • Hitachi Koki Co., Ltd.
    • Shingo Kosugi
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Engine
    • Patent number D589056
    • Issue date Mar 24, 2009
    • Hitachi Koki Co., Ltd.
    • Takeshi Matsuoka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Power tool
    • Patent number 7,490,746
    • Issue date Feb 17, 2009
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Battery pack
    • Patent number D568239
    • Issue date May 6, 2008
    • Hitachi Koki Co., Ltd.
    • Masanori Okada
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Portable electric driver
    • Patent number D567615
    • Issue date Apr 29, 2008
    • Hitachi Koki Co., Ltd.
    • Takeshi Taniguchi
    • D08 - Tools and hardware
  • Information Patent Grant

    Power tool
    • Patent number 7,344,054
    • Issue date Mar 18, 2008
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Battery pack
    • Patent number D562228
    • Issue date Feb 19, 2008
    • Hitachi Koki Co., Ltd.
    • Masanori Okada
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Battery pack
    • Patent number D553562
    • Issue date Oct 23, 2007
    • Hitachi Koki Co., Ltd.
    • Masanori Okada
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Battery pack
    • Patent number D544436
    • Issue date Jun 12, 2007
    • Hitachi Koki, Co., Ltd.
    • Tomoyuki Kawahara
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Air compressor
    • Patent number D539310
    • Issue date Mar 27, 2007
    • Hitachi Koki Co., Ltd.
    • Takeshi Matsuoka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Air compressor
    • Patent number D539309
    • Issue date Mar 27, 2007
    • Hitachi Koki Co., Ltd.
    • Takeshi Matsuoka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Portable tool having cover and label to be stuck on the portable to...
    • Patent number 7,140,451
    • Issue date Nov 28, 2006
    • Hitachi Koki Co., Ltd.
    • Chikai Yoshimizu
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Battery pack
    • Patent number D530270
    • Issue date Oct 17, 2006
    • Hitachi Koki Co., Ltd.
    • Takashi Ozawa
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Slide compound miter saw
    • Patent number D529936
    • Issue date Oct 10, 2006
    • Hitachi Koki Co., Ltd.
    • Takeshi Taniguchi
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Electric power tool
    • Patent number 7,108,079
    • Issue date Sep 19, 2006
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Portable electric hammer drill
    • Patent number D527969
    • Issue date Sep 12, 2006
    • Hitachi Koki Co., Ltd.
    • Masanori Okada
    • D08 - Tools and hardware
  • Information Patent Grant

    Portable electric hammer drill
    • Patent number D526873
    • Issue date Aug 22, 2006
    • Hitachi Koki Co., Ltd.
    • Hitoshi Tsuzuki
    • D08 - Tools and hardware
  • Information Patent Grant

    Portable electric jigsaw
    • Patent number D525098
    • Issue date Jul 18, 2006
    • Hitachi Koki Co., Ltd.
    • Takeshi Taniguchi
    • D08 - Tools and hardware
  • Information Patent Grant

    Portable electric driver
    • Patent number D524136
    • Issue date Jul 4, 2006
    • Hitachi Koki Co., Ltd.
    • Takeshi Taniguchi
    • D08 - Tools and hardware

Patents Applicationslast 30 patents

  • Information Patent Application

    WORK IMPLEMENT
    • Publication number 20150136434
    • Publication date May 21, 2015
    • Hitachi Koki Co., Ltd.
    • Yoshiki AOKI
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRIC DEVICE
    • Publication number 20150043138
    • Publication date Feb 12, 2015
    • Hitachi Koki Co., Ltd.
    • Takafumi Itoh
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    ELECTRIC DEVICE OUTPUTTING LIGHT, WIND, HEAT OR SOUND
    • Publication number 20140313706
    • Publication date Oct 23, 2014
    • Hitachi Koki Co., Ltd.
    • Takafumi Itoh
    • F21 - LIGHTING
  • Information Patent Application

    POWER TOOL
    • Publication number 20140174778
    • Publication date Jun 26, 2014
    • Hitachi Koki Co., Ltd.
    • Yoshiki Aoki
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    POWER TOOL
    • Publication number 20130277079
    • Publication date Oct 24, 2013
    • Hitachi Koki Co., Ltd.
    • Hitoshi Tsuzuki
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Electric power tool
    • Publication number 20090014194
    • Publication date Jan 15, 2009
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    POWER TOOL
    • Publication number 20080185410
    • Publication date Aug 7, 2008
    • Katsuhiro OOMORI
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power tool
    • Publication number 20070102462
    • Publication date May 10, 2007
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Portable tool having cover and label to be stuck on the portable to...
    • Publication number 20070056760
    • Publication date Mar 15, 2007
    • Chikai Yoshimizu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Electric power tool
    • Publication number 20060048959
    • Publication date Mar 9, 2006
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Nail gun
    • Publication number 20050263558
    • Publication date Dec 1, 2005
    • Hitachi Koki Co., Ltd.
    • Yoshinori Ishizawa
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power tool having outer protection layer
    • Publication number 20050155778
    • Publication date Jul 21, 2005
    • Hideki Ishida
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power tool
    • Publication number 20050092792
    • Publication date May 5, 2005
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Portable tool having cover and label to be stuck on the portable to...
    • Publication number 20040111933
    • Publication date Jun 17, 2004
    • Chikai Yoshimizu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power tool
    • Publication number 20040074938
    • Publication date Apr 22, 2004
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Electric power tool
    • Publication number 20030159843
    • Publication date Aug 28, 2003
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Percussion tool
    • Publication number 20030155142
    • Publication date Aug 21, 2003
    • Hitachi Koki Co., Ltd.
    • Atsuyuki Kikuchi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power tool
    • Publication number 20020122707
    • Publication date Sep 5, 2002
    • Masato Sakai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC