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Teruyuki Ohnuma

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  • Shizuoka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electroluminescent device
    • Patent number 5,153,073
    • Issue date Oct 6, 1992
    • Ricoh Company, Ltd.
    • Teruyuki Ohnuma
    • B32 - LAYERED PRODUCTS
  • Information Patent Grant

    Electroluminescent device
    • Patent number 5,118,986
    • Issue date Jun 2, 1992
    • Ricoh Company, Ltd.
    • Teruyuki Ohnuma
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electroluminescent device
    • Patent number 5,093,210
    • Issue date Mar 3, 1992
    • Ricoh Company, Ltd.
    • Masafumi Ohta
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Electroluminescent devices
    • Patent number 5,077,142
    • Issue date Dec 31, 1991
    • Ricoh Company, Ltd.
    • Yohta Sakon
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Manual information input device
    • Patent number 4,707,570
    • Issue date Nov 17, 1987
    • Ricoh Company, Ltd.
    • Yukio Ide
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Development apparatus
    • Patent number 4,382,420
    • Issue date May 10, 1983
    • Ricoh Company, Ltd.
    • Teruyuki Ohnuma
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Reverse development method
    • Patent number 4,350,749
    • Issue date Sep 21, 1982
    • Ricoh Company Ltd.
    • Teruyuki Ohnuma
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Apparatus for developing electrostatic image
    • Patent number 4,286,543
    • Issue date Sep 1, 1981
    • Ricoh Company, Ltd.
    • Teruyuki Ohnuma
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Drum cleaning process and apparatus for electrophotography
    • Patent number 4,201,465
    • Issue date May 6, 1980
    • Ricoh Company, Ltd.
    • Hazime Oyama
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Development apparatus
    • Patent number 4,194,830
    • Issue date Mar 25, 1980
    • Ricoh Company, Ltd.
    • Teruyuki Ohnuma
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electrophotographic apparatus comprising improved imaging system
    • Patent number 4,193,679
    • Issue date Mar 18, 1980
    • Ricoh Company, Ltd.
    • Manabu Mochizuki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnetic brush developing process for electrostatic images
    • Patent number 4,165,393
    • Issue date Aug 21, 1979
    • Ricoh Co., Ltd.
    • Kohji Suzuki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner charging apparatus
    • Patent number 4,119,060
    • Issue date Oct 10, 1978
    • Ricoh Co., Ltd.
    • Nobuo Mochizuki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY