Patents by Inventor Gerd G. Krisam

Gerd G. Krisam 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).

  • Method of binding a biologically active material to a carrier containing hydroxyl groups
    Patent number: 4412000
    Abstract: Biologically active material such as an enzyme is bonded to a carrier containing hydroxyl groups by binding an isocyanate compound to the carrier and bonding the biologically active material to the bound isocyanate compound. Binding of the isocyanate compound to the carrier is achieved with the use of a non-toxic titanium based compound which catalyzes the formation of urethane bonds. The preferred non-toxic based titanium compound is an orthotitanium acid ester such as tetrabutyltitanate.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: October 25, 1983
    Assignee: Gambro Dialysatoren KG
    Inventors: Hans-Dieter Lehmann, Gerd G. Krisam, Ruth S. Golla