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Masami Tomikawa

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  • Sodegaura, JA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Molding material having superior buffering character
    • Patent number 4,026,841
    • Issue date May 31, 1977
    • Idemitsu, Kosan Kabushiki-Kaisha (Idemitsu Kosan Co., Ltd.)
    • Masami Tomikawa
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Pencils not requiring sharpening
    • Patent number 4,019,822
    • Issue date Apr 26, 1977
    • Idemitsu, Kosan Kabushiki-Kaisha (Idemitsu Kosan Co., Ltd.)
    • Takeshi Matsumoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Method of packaging perishable foods and product thereof
    • Patent number 3,994,115
    • Issue date Nov 30, 1976
    • Idemitsu, Kosan Kabushiki-Kaisha (Idemitsu Kosan Co., Ltd.)
    • Isao Mako
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Polyethylene composition
    • Patent number 3,976,612
    • Issue date Aug 24, 1976
    • Idemitsu, Kosan Kabushiki-Kaisha (Idemitsu Kosan Co., Ltd.)
    • Hidehiko Kaji
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Oil adsorbent
    • Patent number 3,960,722
    • Issue date Jun 1, 1976
    • Idemitsu, Kosan Kabushiki Kaisha (Idemitsu Kosan Co., Ltd.)
    • Masami Tomikawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Foamed plastics and process for preparing the same
    • Patent number 3,947,388
    • Issue date Mar 30, 1976
    • Idemitsu Kosan Company Limited
    • Hideo Ohkawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Lightweight construction materials and articles made thereof
    • Patent number 3,940,811
    • Issue date Mar 2, 1976
    • Idemitsu, Kosan Kabushiki-Kaisha (Idemitsu Kosan Co., Ltd.)
    • Masami Tomikawa
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...