Patents by Inventor Ronald Ofstead

Ronald Ofstead 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).

  • Biocompatible polymerization accelerators
    Publication number: 20050112086
    Abstract: The present invention provides method and materials for forming a polymeric matrix having improved biocompatible properties. A polymerization accelerator is provided that includes an N-vinyl group and a biocompatible functional group. The polymerization accelerator is particularly useful for the polymerization of macromers, which can be used to form biocompatible polymeric coatings on the surface of biological materials, such as cells and tissue.
    Type: Application
    Filed: November 26, 2003
    Publication date: May 26, 2005
    Inventors: Dale Swan, Stephen Chudzik, Ronald Ofstead
  • Attachment of molecules to surfaces
    Publication number: 20050074478
    Abstract: The present invention relates to methods, reagents, and substrates that can be used for, for example, immobilizing biomolecules, such as nucleic acids and proteins. In an embodiment, the present invention relates to surfaces coated with a polymer according to the present invention. In an embodiment, the present invention relates to methods for thermochemically and/or photochemically attaching molecules to a surface at a high density.
    Type: Application
    Filed: October 1, 2003
    Publication date: April 7, 2005
    Applicant: SurModics, Inc.
    Inventors: Ronald Ofstead, Melvin Swanson, Dale Swan
  • Hydrogel implant lens construction reconfigured dehydrated re-hydrated in situ
    Patent number: 4919662
    Abstract: This invention provides a new method of preparing intraocular lenses for implantation which comprises folding, stretching, rolling, compressing or otherwise reconfiguring the lens to reduce the profile of the lens in at least one dimension and dehydrating the lens in that shape. The thus prepared artificial intraocular lens may be surgically implanted in the eye through a small incision where it will be rehydrated in situ.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: April 24, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Randall L. Knoll, Wilhelm Lewon, Ronald Ofstead