TREA

Jan Stoffelsma

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  • Hoevelaken, NL
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sulfur-containing flavoring agents
    • Patent number 4,477,678
    • Issue date Oct 16, 1984
    • P.F.W. Beheer B.V.
    • Steven van den Bosch
    • A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
  • Information Patent Grant

    Methylthiomethyl esters as flavor additives
    • Patent number 4,414,233
    • Issue date Nov 8, 1983
    • Polak's Frutal Works, B.V.
    • Steven van den Bosch
    • A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
  • Information Patent Grant

    Novel sulfur-containing flavoring agents
    • Patent number 4,380,655
    • Issue date Apr 19, 1983
    • P.F.W. Beheer B.V.
    • Steven van den Bosch
    • A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
  • Information Patent Grant

    Methylthiomethyl esters as flavor additives
    • Patent number 4,332,829
    • Issue date Jun 1, 1982
    • Polak's Frutal Works, B.V.
    • Steven van den Bosch
    • A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
  • Information Patent Grant

    Sulfur-containing flavoring agents
    • Patent number 4,119,737
    • Issue date Oct 10, 1978
    • P.F.W. Beheer B.V.
    • Steven van den Bosch
    • A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
  • Information Patent Grant

    Mercapto alcohols and mercaptoalkyl esters
    • Patent number 4,053,656
    • Issue date Oct 11, 1977
    • Polak's Frutal Works B.V.
    • Jan Stoffelsma
    • A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
  • Information Patent Grant

    Mercapto alcohols and mercaptoalkyl esters
    • Patent number 3,970,689
    • Issue date Jul 20, 1976
    • Polak's Frutal Works B.V.
    • Jan Stoffelsma
    • A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES