TREA

Wasaburo Ohta

Follow

Person

  • Yokohama, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Method of forming a thin film magnetic head
    • Patent number 5,465,475
    • Issue date Nov 14, 1995
    • Ricoh Co., Ltd.
    • Mikio Kinoshita
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Thin film deposition system
    • Patent number 5,427,668
    • Issue date Jun 27, 1995
    • Ricoh Company, Ltd.
    • Tatsuya Sato
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Optical information recording medium
    • Patent number 5,368,908
    • Issue date Nov 29, 1994
    • Ricoh Company, Ltd.
    • Wasaburo Ohta
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Gas sensor having metal-oxide semiconductor layer
    • Patent number 5,250,170
    • Issue date Oct 5, 1993
    • Ricoh Company, Ltd.
    • Shinji Yagawara
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Optical information recording medium having multi-layered structure...
    • Patent number 5,251,202
    • Issue date Oct 5, 1993
    • Ricoh Company, Ltd.
    • Yujiro Kaneko
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Thin film gas sensor
    • Patent number 5,147,523
    • Issue date Sep 15, 1992
    • Ricoh Company, Ltd.
    • Shinji Yagawara
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Thin film forming apparatus
    • Patent number 5,133,849
    • Issue date Jul 28, 1992
    • Ricoh Company, Ltd.
    • Mikio Kinoshita
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Thin film deposition system
    • Patent number 5,114,559
    • Issue date May 19, 1992
    • Ricoh Company, Ltd.
    • Wasaburo Ohta
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Apparatus for forming a thin film
    • Patent number 5,112,466
    • Issue date May 12, 1992
    • Ricoh Company, Ltd.
    • Wasaburo Ohta
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Thin film forming apparatus
    • Patent number 5,058,527
    • Issue date Oct 22, 1991
    • Ricoh Company, Ltd.
    • Wasaburo Ohta
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Gas detecting device
    • Patent number 5,019,885
    • Issue date May 28, 1991
    • Ricoh Company, Ltd.
    • Shinji Yagawara
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Gas detecting device
    • Patent number 5,012,671
    • Issue date May 7, 1991
    • Ricoh Company, Ltd.
    • Shinji Yagawara
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Gas detecting device
    • Patent number 5,003,812
    • Issue date Apr 2, 1991
    • Ricoh Company, Ltd.
    • Shinji Yagawara
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Gas detecting device and gas detecting system using the same
    • Patent number 4,984,446
    • Issue date Jan 15, 1991
    • Ricoh Company, Ltd.
    • Shinji Yagawara
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Apparatus for forming thin film
    • Patent number 4,982,696
    • Issue date Jan 8, 1991
    • Ricoh Company, Ltd.
    • Mikio Kinoshita
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Vapor deposition apparatus
    • Patent number 4,974,544
    • Issue date Dec 4, 1990
    • Ricoh Company, Co.
    • Wasaburo Ohta
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Gas detecting device
    • Patent number 4,967,589
    • Issue date Nov 6, 1990
    • Ricoh Company, Ltd.
    • Shinji Yagawara
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Apparatus for forming a thin film
    • Patent number 4,966,095
    • Issue date Oct 30, 1990
    • Ricoh Company, Ltd.
    • Wasaburo Ohta
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Apparatus for forming a thin film
    • Patent number 4,960,072
    • Issue date Oct 2, 1990
    • Ricoh Company, Ltd.
    • Wasaburo Ohta
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Flow velocity sensor
    • Patent number 4,947,688
    • Issue date Aug 14, 1990
    • Ricoh Company, Ltd.
    • Shinji Yagawara
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Apparatus for forming a thin film
    • Patent number 4,876,984
    • Issue date Oct 31, 1989
    • Ricoh Company, Ltd.
    • Mikio Kinoshita
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Thin film forming apparatus
    • Patent number 4,854,265
    • Issue date Aug 8, 1989
    • Ricoh Company, Ltd.
    • Wasaburo Ohta
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Projection device for irradiating a light to a display device and o...
    • Patent number 4,818,074
    • Issue date Apr 4, 1989
    • Ricoh Company, Ltd.
    • Kenya Yokoi
    • G02 - OPTICS
  • Information Patent Grant

    Liquid crystal color display device
    • Patent number 4,793,691
    • Issue date Dec 27, 1988
    • Ricoh Company, Ltd.
    • Takamichi Enomoto
    • G02 - OPTICS
  • Information Patent Grant

    Liquid crystal color display device
    • Patent number 4,772,885
    • Issue date Sep 20, 1988
    • Ricoh Company, Ltd.
    • Kiyohiro Uehara
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Liquid crystal color display device
    • Patent number 4,678,285
    • Issue date Jul 7, 1987
    • Ricoh Company, Ltd.
    • Wasaburo Ohta
    • G02 - OPTICS
  • Information Patent Grant

    Information recording method and apparatus
    • Patent number 4,489,332
    • Issue date Dec 18, 1984
    • Ricoh Company, Ltd.
    • Wasaburo Ohta
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Image recording method
    • Patent number 4,459,598
    • Issue date Jul 10, 1984
    • Ricoh Company, Ltd.
    • Wasaburo Ohta
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner image transfer method and apparatus for electrostatic photogr...
    • Patent number 4,268,157
    • Issue date May 19, 1981
    • Ricoh Company, Ltd.
    • Yutaka Ebi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Two color electrostatographic apparatus
    • Patent number 4,264,185
    • Issue date Apr 28, 1981
    • Ricoh Co., Ltd.
    • Wasaburo Ohta
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY