Patents by Inventor Sven Ivan Arvid Tornmarck

Sven Ivan Arvid Tornmarck has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Enzymatic substrate composition adsorbed on a carrier
    Patent number: 4043871
    Abstract: An enzymatic substrate adsorbed on a solid carrier with a large specific surface area of over 50 m.sup.2 /g. The enzymatic substrate shall be stable in the absence of the corresponding enzyme and essentially non-soluble in water. The substrate containing layer surrounding the carrier may also comprise diluents and thickeners. The substrate-carrier together with an enzyme and a pH indicating substance is also useful as a time-temperature indicating device.
    Type: Grant
    Filed: July 18, 1974
    Date of Patent: August 23, 1977
    Assignee: Kommanditbolaget Kockums Chemical AB & Co.
    Inventors: Kjell Gunnar Blixt, Sven Ivan Arvid Tornmarck, Rolf Juhlin, Karl Rune Salenstedt, Mandayam Tiru
  • Time and temperature-dependent enzymatic indicator
    Patent number: 3977945
    Abstract: A time and temperature dependent enzymatic indicator with discontinuable indication comprises a plastic envelope container enclosing an enzyme, an enzymatic substrate and a pH-indicator as active components, the indication being discontinuable in that the enzyme is bound to a carrier and in that the plastic envelope is sealable for dividing the container into two compartments, one of which is free from enzyme and thus cannot provide further indication.
    Type: Grant
    Filed: February 20, 1975
    Date of Patent: August 31, 1976
    Assignee: Food Control AB
    Inventor: Sven Ivan Arvid Tornmarck