Patents by Inventor Ted H. Thorsted, Jr.

Ted H. Thorsted, Jr. 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).

  • Epoxy resin system and pultrusion process employing same
    Patent number: 4842667
    Abstract: An epoxy resin system is disclosed which is especially adapted for use in the pultrusion process. Such resin system comprises tris (hydroxyphenyl) methane-based epoxy resin and a combination of the cross-linking agents (methyl)-bicyclo(2,2,1) heptane-2,3-dicarboxylic anhydride and poly sebacic poly anhydride, the ratio of the dicarboxylic anhydride to the total amount of cross-linking agents ranging from 0.65 to 0.80 and the ratio of the poly anhydride to the total amount of cross-linking agents ranging from 0.35 to 0.20. The amount of total cross-linking agents to epoxy resin ranges from about 60 to about 80 parts total cross-linking agents, per 100 parts resin, by weight. A small amount of an imidazole accelerator, preferably 2-ethyl-4 methyl imidazole, is included.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: June 27, 1989
    Assignee: Lockheed Corporation
    Inventor: Ted H. Thorsted, Jr.
  • Epoxy resin system and pultrusion process employing same
    Patent number: 4754015
    Abstract: An epoxy resin system is disclosed which is especially adapted for use in the pultrusion process. Such resin system comprises tris (hydroxyphenyl) methane-based epoxy resin and a combination of the cross-linking agents (methyl)-bicyclo(2,2,1) heptane-2,3-dicarboxylic anhydride and poly sebacic poly anhydride, the ratio of the dicarboxylic anhydride to the total amount of cross-linking agents ranging from 0.65 to 0.80 and the ratio of the poly anhydride to the total amount of cross-linking agents ranging from 0.35 to 0.20. The amount of total cross-linking agents to epoxy resin ranges from about 60 to about 80 parts total cross-linking agents, per 100 parts resin, by weight. A small amount of an imidazole accelerator, preferably 2-ethyl-4 methyl imidazole, is included.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: June 28, 1988
    Assignee: Lockheed Corporation
    Inventor: Ted H. Thorsted, Jr.