Patents by Inventor Bjarne Hogstrom

Bjarne Hogstrom 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).

  • UV absorbing lens material
    Patent number: 4795461
    Abstract: The invention is concerned with a UV absorbing plastics material to be used in intraocular lenses, said material having been produced by means of incorporating in the plastics monomer mixture, prior to the polymerization thereof, a combination of chromophores selected from two groups of substances.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: January 3, 1989
    Assignee: Pharmacia AB
    Inventors: Bengt Lindqvist, Bjarne Hogstrom, Martin Sandberg, Per I. Nilsson