Patents by Inventor Karl O. P. Larm

Karl O. P. Larm 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).

  • Process for the preparation of surface modified solid substrates
    Patent number: 5213898
    Abstract: Method for surface modifying substrates characterized in adsorbing on the surface of a solid substrate a polyamine of a high average molecular weight and cross-linking this with crotonaldehyde either simultaneously or by addition in separate steps to produce amino groups on the surface of the substrate, and optionally adsorbing one or several alternating layers of an anionic polysaccharide and of the said polyamine being cross-linked with crotonaldehyde, and optionally finally adsorbing the said polyamine, not cross-linked, to produce free primary amino groups by which chemical entities having a biological activity may be bound by covalent or ionic bonding.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: May 25, 1993
    Assignee: Norsk Hydro a.s.
    Inventors: Karl O. P. Larm, Lars A. Adolfsson, Kjell P. Olsson
  • Process for the preparation of surface modified solid substrates
    Patent number: 5049403
    Abstract: Method for surface modifying substrates characterized in absorbing on the surface of a solid substrate a polyamine of a high average molecular weight and cross-linking this with crotonaldehyde either simultaneously or by addition in separate steps to produce amino groups on the surface of the substrate, and optionally adsorbing one or several alternating layers of an anionic polysaccharide and of the said polyamine being cross-linked with crotonaldehyde, and optionally finally adsorbing the said polyamine, not cross-linked, to produce free primary amino groups by which chemical entities having a biological activity may be bound by covalent or ionic bonding.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: September 17, 1991
    Assignee: Horsk Hydro A.S.
    Inventors: Karl O. P. Larm, Lars A. Adolfsson, Kjell P. Olsson
  • Macrophage-activating composition and a process for its manufacture
    Patent number: 4795745
    Abstract: Macrophage-stimulatory composition containing a water-soluble .beta.-1.3-bound glucan and a water-insoluble carrier to which the glucan has been immobilized; its use; and a process for its manufacture.
    Type: Grant
    Filed: September 19, 1985
    Date of Patent: January 3, 1989
    Inventors: Karl O. P. Larm, James Hoffman, Rolf Seljelid, Jarl Bogwald