Patents Assigned to Food Control AB
  • 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