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Masashi Somezawa

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  • Miyagi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic recording medium utilizing a fungicide
    • Patent number 5,028,497
    • Issue date Jul 2, 1991
    • Sony Corporation
    • Masashi Somezawa
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,654,260
    • Issue date Mar 31, 1987
    • Sony Corporation
    • Ryoji Chubachi
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,637,959
    • Issue date Jan 20, 1987
    • Sony Corporation
    • Yoshinobu Ninomiya
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,634,633
    • Issue date Jan 6, 1987
    • Sony Corporation
    • Yoshinobu Ninomiya
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,521,486
    • Issue date Jun 4, 1985
    • Sony Corporation
    • Yoshinobu Ninomiya
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Method for manufacturing a magnetic recording medium
    • Patent number 4,508,752
    • Issue date Apr 2, 1985
    • Sony Corporation
    • Yutaka Takei
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Electron radiation curable resin
    • Patent number 4,503,198
    • Issue date Mar 5, 1985
    • Sony Corporation
    • Seiichi Miyai
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,501,801
    • Issue date Feb 26, 1985
    • Sony Corporation
    • Shigeo Kimura
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,435,485
    • Issue date Mar 6, 1984
    • Sony Corporation
    • Kaoru Nakajima
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,434,210
    • Issue date Feb 28, 1984
    • Sony Corporation
    • Kaoru Nakajima
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,431,703
    • Issue date Feb 14, 1984
    • Sony Corporation
    • Masashi Somezawa
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Thermoplastic polyurethane resins
    • Patent number 4,400,498
    • Issue date Aug 23, 1983
    • Sony Corporation
    • Shin Konishi
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Magnetic recording medium with amino lubricating layer
    • Patent number 4,396,674
    • Issue date Aug 2, 1983
    • Sony Corporation
    • Masashi Somezawa
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Novel diorganopolysiloxane compounds
    • Patent number 4,384,100
    • Issue date May 17, 1983
    • Shin-Etsu Chemical Co., Ltd.
    • Minoru Takamizawa
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,369,230
    • Issue date Jan 18, 1983
    • Sony Corporation
    • Shigeo Kimura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Magnetic recording media
    • Patent number 4,368,238
    • Issue date Jan 11, 1983
    • Sony Corporation
    • Masashi Somezawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,368,242
    • Issue date Jan 11, 1983
    • Sony Corporation
    • Kaoru Nakajima
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Method for treating a magnetic recording medium
    • Patent number 4,100,326
    • Issue date Jul 11, 1978
    • Sony Corporation
    • Masashi Somezawa
    • G11 - INFORMATION STORAGE