Patents by Inventor Charles S. Woodson

Charles S. Woodson 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: 20030164215
    Abstract: Preferred embodiments of the present invention relate to rocket fuels comprising metal hydrides and poly-dicyclopentadiene (“poly-DCPD”). Although poly-DCPD also has physical and chemical properties that are compatible with being used as a rocket fuel in its own right, its primary function is as a binder for the metal hydride. Illustrative examples of metal hydrides include but are not limited to as aluminum hydrides, lithium hydrides, and lithium aluminum hydrides.
    Type: Application
    Filed: November 28, 2001
    Publication date: September 4, 2003
    Applicant: A.P.T. Aerospace, L.L.C.
    Inventors: Charles S. Woodson, Robert H. Grubbs, Ronald W. Humble
  • Publication number: 20020172787
    Abstract: Thermosetting resin pipes and pipe fittings are provided which are prepared by polymerizing a cyclic olefin monomer in the presence of a ruthenium or osmium metathesis polymerization catalyst. These articles may be prepared by various methods, such as centrifugal casting. Reinforced articles may also be prepared by filament winding.
    Type: Application
    Filed: May 20, 2002
    Publication date: November 21, 2002
    Applicant: Cymetech, LLC and A.O. Smith Corporation
    Inventors: Mark M. Warner, Steven D. Drake, Larry L. Cagle, Charles S. Woodson
  • Patent number: 6433101
    Abstract: The present invention relates to the post-polymerization fluorination methods of polymers produced via ring-opening metathesis polymerization. Unlike prior art methods that result in low product yields and generally involve chemically aggressive reagents, the inventive methods produce fluorinated polymers in quantitative yields and under mild conditions. In preferred embodiments, a source of difluorocarbene is reacted with the desired polydiene to form a fluorinated polymer product. In preferred embodiments, the source of difluorocarbene is hexafluoropropylene oxide and the polydiene is poly-dicyclopentadiene (“poly-DCPD”). Fluorination and the concomitant removal of unsaturated bonds result in polymers having improved physical properties such as improved strength characteristics, enhanced oxidative and chemical stability, and low surface energies.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: August 13, 2002
    Assignees: Regents of the University of Minnesota, Cymetech, LLC
    Inventors: Charles S. Woodson, Marc A. Hillmyer, Robert H. Grubbs, Timothy P. Lodge, Yu Ren
  • Patent number: 6410110
    Abstract: Thermosetting resin pipes and pipe fittings are provided which are prepared by polymerizing a cyclic olefin monomer in the presence of a ruthenium or osmium metathesis polymerization catalyst. These articles may be prepared by various methods, such as centrifugal casting. Reinforced articles may also be prepared by filament winding.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: June 25, 2002
    Assignees: A.O. Smith Corp., Cymetech, LLC
    Inventors: Mark W. Warner, Steven D. Drake, Larry L. Cagle, Charles S. Woodson
  • Patent number: 6383319
    Abstract: Preferred embodiments of the present invention relate to rocket fuels comprising metal hydrides and poly-dicyclopentadiene (“poly-DCPD”). Although poly-DCPD also has physical and chemical properties that are compatible with being used as a rocket fuel in its own right, its primary function is as a binder for the metal hydride. Illustrative examples of metal hydrides include but are not limited to as aluminum hydrides, lithium hydrides, and lithium aluminum hydrides.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: May 7, 2002
    Assignee: A.P.T. Aerospace, L.L.C.
    Inventors: Ronald W. Humble, Robert H. Grubbs, Charles S. Woodson
  • Patent number: 6310121
    Abstract: Compositions including fibers, fillers, reinforcing agents or other property-enhancing agents added to a polymeric matrix formed from DCPD monomer or related compounds such as norbornene and norbornadiene are disclosed. The composition has a mechanically forgiving matrix due to the polymer with the inherent strength and other physical properties of the enhancement agent according to the invention. Enhancement agents according to the invention generally include inorganic, organic and metallic substances in a variety of forms.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: October 30, 2001
    Assignee: Cymetech, LLC
    Inventors: Charles S. Woodson, Jr, Robert H. Grubbs
  • Patent number: 6020443
    Abstract: Methods for synthesizing polyDCPD via ROMP of low grade DCPD starting materials using Ruthenium or Osmium carbene complex catalyst. Transparent or translucent polyDCPD materials. The Ruthenium or Osmium carbene complex catalysts having the formula ##STR1## where M may be Os or Ru; R and R.sup.1 may be the same or different and may be hydrogen or a substituent group including C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkynyl, C.sub.1 -C.sub.20 alkyl, aryl, C.sub.1 -C.sub.20 carboxylate, C.sub.1 -C.sub.20 alkoxy, C.sub.2 -C.sub.20 alkenyloxy, C.sub.2 -C.sub.20 alkynyloxy, aryloxy, C.sub.2 -C.sub.20 alkoxycarbonyl, C.sub.1 -C.sub.20 alkylthio, C.sub.1 -C.sub.20 alkylsulfonyl and C.sub.1 -C.sub.20 alkylsulfinyl; X and X.sup.1 may be the same or different and may be any anionic ligand; and L and L.sup.1 may be the same or different and may be neutral electron donor. The low grade DCPD starting materials containing less than about 97% by weight of DCPD monomers.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: February 1, 2000
    Assignee: Advanced Polymer Technologies, Inc.
    Inventors: Charles S. Woodson, Robert H. Grubbs
  • Patent number: 5939504
    Abstract: Compositions and methods for catalyzing and controlling the rate of olefin metathesis reactions including Ring Opening Metathesis Polymerization (ROMP) reactions. The molding of polymer articles using ROMP polymers. The composition includes a Ruthenium or Osmium carbene complex catalyst and a gel modification additive. The Ruthenium or Osmium carbene complex catalyst having the formula ##STR1## where M may be Os or Ru; R and R.sup.1 may be the same or different and may be hydrogen or a substituent group including C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkynyl, C.sub.1 -C.sub.20 alkyl, aryl, C.sub.1 -C.sub.20 carboxylate, C.sub.1 -C.sub.20 alkoxy, C.sub.2 -C.sub.20 alkenyloxy, C.sub.2 -C.sub.20 alkynyloxy, aryloxy, C.sub.2 -C.sub.20 alkoxycarbonyl, C.sub.1 -C.sub.20 alkylthio, C.sub.1 -C.sub.20 alkylsulfonyl and C.sub.1 -C.sub.20 alkylsulfinyl; X and X.sup.1 may be the same or different and may be any anionic ligand; and L and L.sup.1 may be the same or different and may be neutral electron donor.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: August 17, 1999
    Assignee: Advanced Polymer Technologies
    Inventors: Charles S. Woodson, Jr., Robert H. Grubbs
  • Patent number: 5728785
    Abstract: Methods of forming polycycloolefins having high crosslink density are disclosed. Olefins are polymerized via a metathesis mechanism in the presence of a crosslinking agent and a catalyst. The crosslinking agent generally comprises a peroxide that decomposes into reactive species forming crosslinks during post-cure. The catalyst is a ruthenium or osmium carbene complex of the formula: ##STR1## wherein M is Os or Ru; R and R.sup.1 are independently selected from hydrogen or a hydrocarbon selected from the group consisting of C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkynyl, C.sub.2 -C.sub.20 alkoxycarbonyl, aryl, C.sub.1 -C.sub.20 carboxylate, C.sub.1 -C.sub.20 alkoxy, C.sub.2 -C.sub.20 alkenyloxy, C.sub.2 -C.sub.20 alkynyloxy and aryloxy; X and X.sup.1 are independently selected from any anionic ligand; and L and L.sup.1 are independently selected from any neutral electron donor. Preferably, L and L.sup.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: March 17, 1998
    Assignee: California Institute of Technology
    Inventors: Robert H. Grubbs, Charles S. Woodson, Jr.
  • Patent number: 5266370
    Abstract: A centrifugally cast plastic pipe comprised of a polymer derived from monomers polymerized in bulk is provided. A pressurized cylindrical mold provides smooth inner and outer surfaces. Pipes with a wall thickness of from 1/8 inch to 3 inches and an outer diameter of 1 inch to 12 feet are provided.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: November 30, 1993
    Assignee: PTI/End-Corr, Inc.
    Inventors: Charles S. Woodson, Michael J. Darnall, Norman A. Deumite
  • Patent number: 5087343
    Abstract: A molded, one piece electrolytic cell head is provided which is obtained from a closed mold. The structure weighs more than 100 pounds and is comprised of bulk polymerized monomers having norbornene functionality. The structure provides improved performance over cell heads comprised of fiber glass reinforced polyester since fiber reinforcement is not required.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: February 11, 1992
    Assignees: The B. F. Goodrich Company, PTI/END/CORR
    Inventors: Charles S. Woodson, Dennis Janda, Paul T. Stricharczuk
  • Patent number: 3988412
    Abstract: Method of making a plastic pipe and method of making same, having an outer shell of reinforced thermo-setting resin and an inner shell of thermo-setting and thermo-plastic resins.
    Type: Grant
    Filed: May 13, 1975
    Date of Patent: October 26, 1976
    Assignee: Youngstown Sheet and Tube Company
    Inventor: Charles S. Woodson
  • Patent number: RE36340
    Abstract: A centrifugally cast plastic pipe comprised of a polymer derived from monomers polymerized in bulk is provided. A pressurized cylindrical mold provides smooth inner and outer surfaces. Pipes with a wall thickness of from 1/8 inch to 3 inches and an outer diameter of 1 inch to 12 feet are provided.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: October 12, 1999
    Assignee: A. O. Smith Corporation
    Inventors: Charles S. Woodson, Michael J. Darnall, Norman A. Deumite