Patents by Inventor Leslie J. Henderson

Leslie J. Henderson 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).

  • Ceramics formed by pyrolysis of either linear or thermosetting carborane (siloxane or silane) acetylene based precursor polymers
    Patent number: 5348917
    Abstract: Ceramics that are formed from high temperature oxidatively stable thermosetting polymers which, in turn, are formed from linear polymeric materials having repeat units that contain at least one alkynyl group for cross-linking purposes and at least one bis(silyl or siloxanyl)carboranyl group.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: September 20, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Leslie J. Henderson, Jr.
  • Carborane-(silane or siloxane)-unsaturated hydrocarbon based thermosetting polymers
    Patent number: 5292779
    Abstract: This invention relates to a new class of novel inorganic-organic hybrid polymers that are formed from linear inorganic-organic hybrid polymers of varying molecular weight. These new high temperature oxidatively stable thermosetting polymers are formed from linear polymeric materials having repeat units that contain at least one alkynyl group for cross-linking purposes and at least one bis(silyl or siloxanyl)carboranyl group. These novel organoboron thermoset polymers contain an unsaturated cross-linked hydrocarbon moiety.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: March 8, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Leslie J. Henderson
  • Carborane-(siloxane or silane)-unsaturated hydrocarbon based polymers
    Patent number: 5272237
    Abstract: This invention relates to a new class of novel linear inorganicorganic hybrid polymers of varying molecular weight that are useful for making high temperature, oxidatively stable thermosets, and these novel linear polymers are in themselves oxidatively stable at high temperatures between 600.degree.-1000.degree. C. These new materials have repeat units that contain at least one alkynyl group and at least one bis(silyl or siloxanyl)carboranyl group within the backbone of these novel linear polymers. These novel linear polymers can be further polymerized to form thermosets and ceramics.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: December 21, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Leslie J. Henderson