Patents by Inventor Harlan Frederick Reese

Harlan Frederick Reese 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 forming carbon-carbon composite
    Patent number: 5686027
    Abstract: A novel polyphenylene resin is formed by the polycyclotrimerization of vinylethynylbenzene, diethynylbenzene and phenylacetylene. Polymerization is carried out under conditions which result in the retention of unreacted vinyl groups from the vinylethynylbenzene component, which are then susceptible to crosslinking. The polymer is useful in the formation of high-performance carbon-carbon composites, producing an unusually high char yield with advantageous handling and processing characteristics.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: November 11, 1997
    Assignee: Aerojet-General Corporation
    Inventors: Robert Earl Olsen, Harlan Frederick Reese, Stephen John Backlund
  • Substituted 1,4-diphenylbutadiynes and oligomers thereof as polymer fluidizers and resins
    Patent number: 5686520
    Abstract: Compounds having the formula ##STR1## in which R is a member selected from the group consisting of H, CH.sub.2 .dbd.CH--, and CH.tbd.C--, R' is a member selected from the group consisting of --CH.dbd.CH.sub.2 and --C.tbd.CH, and n is zero, 1, 2, 3 or 4, are useful as fluidizers for polyphenylene prepolymers, rendering the latter sufficiently fluid for processing to form high-performance carbonaceous materials. These compounds are also useful themselves as monomers and prepolymers for the formation of the high-performance carbonaceous materials.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: November 11, 1997
    Assignee: Aerojet-General Corporation
    Inventors: Robert Earl Olsen, Stephen John Backlund, Harlan Frederick Reese