TREA

Hirofumi Tanaka

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  • Shiroyama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self-propelled cleaning device and method of operation thereof
    • Patent number 7,515,991
    • Issue date Apr 7, 2009
    • Hitachi, Ltd.
    • Saku Egawa
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Self-propelled cleaning device and charger using the same
    • Patent number 7,418,762
    • Issue date Sep 2, 2008
    • Hitachi, Ltd.
    • Yutaka Arai
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Electric vacuum cleaner
    • Patent number 7,276,099
    • Issue date Oct 2, 2007
    • Hitachi Home & Life Solutions, Inc.
    • Shoji Hayashi
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Electric vacuum cleaner
    • Patent number 7,207,083
    • Issue date Apr 24, 2007
    • Hitachi Home & Life Solutions, Inc.
    • Shoji Hayashi
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Electric vacuum cleaner
    • Publication number 20060218744
    • Publication date Oct 5, 2006
    • Shoji Hayashi
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    Electric vacuum cleaner
    • Publication number 20060123751
    • Publication date Jun 15, 2006
    • Shoji Hayashi
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    Self-propelled cleaning device and charger using the same
    • Publication number 20040255425
    • Publication date Dec 23, 2004
    • Yutaka Arai
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    Self-propelled cleaning device and method of operation thereof
    • Publication number 20040181896
    • Publication date Sep 23, 2004
    • Saku Egawa
    • G05 - CONTROLLING REGULATING
  • Information Patent Application

    Electric vacuum cleaner
    • Publication number 20030226232
    • Publication date Dec 11, 2003
    • Shoji Hayashi
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...