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Takatoshi Shimomura

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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for producing semipermeable membrane
    • Patent number 4,548,769
    • Issue date Oct 22, 1985
    • Sumitomo Chemical Company, Limited
    • Takatoshi Shimomura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for producing semipermeable membrane
    • Patent number 4,511,711
    • Issue date Apr 16, 1985
    • Sumitomo Chemical Company, Limited
    • Takatoshi Shimomura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Semipermeable membrane and process of making same
    • Patent number 4,330,406
    • Issue date May 18, 1982
    • Sumitomo Chemical Company, Limited
    • Takezo Sano
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Semipermeable membrane
    • Patent number 4,272,378
    • Issue date Jun 9, 1981
    • Sumitomo Chemical Company, Limited
    • Takezo Sano
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Process for improving semipermeable membranes by treating with prot...
    • Patent number 4,268,662
    • Issue date May 19, 1981
    • Sumitomo Chemical Company, Limited
    • Takezo Sano
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Process for producing semipermeable membranes
    • Patent number 4,265,959
    • Issue date May 5, 1981
    • Sumitomo Chemical Company, Limited
    • Takezo Sano
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Process for preparing of semipermeable membranes
    • Patent number 4,163,725
    • Issue date Aug 7, 1979
    • Sumitomo Chemical Company, Limited
    • Takezo Sano
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Process for producing semipermeable membranes
    • Patent number 4,147,745
    • Issue date Apr 3, 1979
    • Sumitomo Chemical Company Limited
    • Takezo Sano
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Process for producing semipermeable membranes
    • Patent number 4,107,049
    • Issue date Aug 15, 1978
    • Sumitomo Chemical Company, Limited
    • Takezo Sano
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL