Patents by Inventor Geir Olav Gogstad

Geir Olav Gogstad 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).

  • Publication number: 20030036109
    Abstract: The invention provides a method for analyzing for bacteria in a liquid sample comprising the following steps: a) contacting said sample with a substrate capable of retaining bacteria or bacterial fragments; b)staining any bacteria retained on said substrate with at least one solution comprising a first dye, said staining being conducted at a pH at which the dye has an overall positive charge and the bacteria has an overall negative charge; and c) inspecting the substrate for the presence of a stain whereby to indicate the presence of bacteria in said sample; with the proviso that where said liquid sample is other than a milk sample and substrate is a filter then said filter comprises a polysulfone or a derivative of a polysulfone.
    Type: Application
    Filed: September 13, 2002
    Publication date: February 20, 2003
    Inventors: Simak Pour Yazdankhah, Geir Olav Gogstad, Rune Henning Sorum, Hans Jorgen Soiland Larsen
  • Patent number: 5691207
    Abstract: Methods of assaying samples for the presence of an analyte involving immobilization of a gold sol, and optionally an enzyme capable of generating a reaction product, on a solid phase. The gold sol has a mean particle size of less than 20 nm for at least 75% by weight of the particles and is formed into a novel superaggregated complex with at least one protein.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: November 25, 1997
    Assignee: Nycomed Pharma AS
    Inventors: Jostein Holtlund, Geir Olav Gogstad
  • Patent number: 5650333
    Abstract: Methods of assaying samples for the presence or quantity of an analyte involving immobilization of a gold sol, and optionally an enzyme capable of generating a reaction product, on a solid phase. The gold sol has a mean particle size of less than 20 nm for at least 75% by weight of the particles and is formed into a novel superaggregated complex with at least one protein.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 22, 1997
    Assignee: Nycomed Pharma AS
    Inventors: Jostein Holtlund, Geir Olav Gogstad