TREA

Ryokichi Yamazaki

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Retractable stairs-like stand
    • Patent number 6,055,780
    • Issue date May 2, 2000
    • Kotobuki Corporation
    • Ryokichi Yamazaki
    • E04 - BUILDING
  • Information Patent Grant

    Retractable stairs-like stand
    • Patent number 6,000,174
    • Issue date Dec 14, 1999
    • Kotobuki Corporation
    • Ryokichi Yamazaki
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Turning mechanism for chair seat
    • Patent number 5,803,546
    • Issue date Sep 8, 1998
    • Kabushiki Kaisha Kotobuki
    • Ryokichi Yamazaki
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Chair for an acoustically designed building
    • Patent number 5,700,052
    • Issue date Dec 23, 1997
    • Yamaha Corporation
    • Ryokichi Yamazaki
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Folding seat and seating system having folding seat
    • Patent number 5,685,608
    • Issue date Nov 11, 1997
    • Kotobuki Corporation
    • Ryokichi Yamazaki
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Layable seat
    • Patent number 5,328,238
    • Issue date Jul 12, 1994
    • Kotobuki Corporation
    • Ryokichi Yamazaki
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Flip-up type seat
    • Patent number 5,328,239
    • Issue date Jul 12, 1994
    • Kotobuki Corporation
    • Ryokichi Yamazaki
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Apparatus for displacing extensible/contractible board for chair in...
    • Patent number 5,087,096
    • Issue date Feb 11, 1992
    • Kabushiki Kaisha Kotobuki
    • Ryokichi Yamazaki
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Coupled chair unit convertible to a chair mode and to a desk mode
    • Patent number 4,932,718
    • Issue date Jun 12, 1990
    • Kotobuki Seating Company, Ltd.
    • Ryokichi Yamazaki
    • B60 - VEHICLES IN GENERAL