TREA

Masaaki Sumii

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  • Sakai, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Thermochromic composition
    • Patent number 5,527,385
    • Issue date Jun 18, 1996
    • Sakura Color Products Corporation
    • Masaaki Sumii
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Microencapsulation process
    • Patent number 5,503,781
    • Issue date Apr 2, 1996
    • Sakura Color Products Corporation
    • Masaaki Sumii
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Dyeing method
    • Patent number 5,478,361
    • Issue date Dec 26, 1995
    • Sakura Color Products Corporation
    • Masaaki Sumii
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Thermochromic composition
    • Patent number 5,350,633
    • Issue date Sep 27, 1994
    • Sakura Color Products Corporation
    • Masaaki Sumii
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Thermochromic composition
    • Patent number 5,350,634
    • Issue date Sep 27, 1994
    • Sakura Color Products Corporation
    • Masaaki Sumii
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Double-walled microcapsules and a process for preparation of same
    • Patent number 5,180,637
    • Issue date Jan 19, 1993
    • Sakura Color Products Corporation
    • Masaaki Sumii
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL