Patents by Inventor Ake Rosengren

Ake Rosengren 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).

  • Patent number: 4130470
    Abstract: Method for changing the pH value of a compound used in electrophoresis which comprises the generating of the pH-function along at least part of the separation path from the protolysis equilibrium with the separation method and/or chargeable groups immobilized in a matrix, in which the groups contain one or more of the elements carbon, sulphur, phosphorus, boron, or nitrogen.
    Type: Grant
    Filed: December 7, 1976
    Date of Patent: December 19, 1978
    Assignee: Aminkemi AB
    Inventors: Ake Rosengren, Bengt Bjellqvist, Vesna Gasparic
  • Patent number: 4118485
    Abstract: A medical article is made non-thrombogenic by means of a surface coating containing heparin. The heparinized surface is stabilized by being contacted first with a cationic surfactant of the primary amine type and, subsequently, with a dialdehyde.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: October 3, 1978
    Assignee: Aminkemi Aktiebolag
    Inventors: Jan-Christer Eriksson, Rolf Larsson, Ake Rosengren, Maj-Britt Hjelte