Patents Assigned to Biax Fiberfilm Corp.
  • Chemically-impregnated microporous films
    Patent number: 4289832
    Abstract: There is disclosed a novel apparatus for the selective stretching of a coated or impregnated substrate of a synthetic thermoplastic polymer or blends thereof to form an impregnated microporous film thereof.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: September 15, 1981
    Assignee: Biax Fiberfilm Corp.
    Inventor: Eckhard C. A. Schwarz