Patents by Inventor Donald E. Hudgin

Donald E. Hudgin 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).

  • Patent number: 4582872
    Abstract: Metallized polymers are made by melting the metal and polymer together. The products have improved impact resistance and electrical and thermal conductivity. They can also be used for electromagnetic interference shielding.
    Type: Grant
    Filed: January 28, 1985
    Date of Patent: April 15, 1986
    Assignee: Princeton Polymer Laboratories
    Inventors: Donald E. Hudgin, Mohammad A. Semsarzadeh
  • Patent number: 4533685
    Abstract: Metallized polymers are made by melting the metal and polymer together. The products have improved impact resistance and electrical and thermal conductivity. They can also be used for electromagnetic interference shielding.
    Type: Grant
    Filed: July 26, 1983
    Date of Patent: August 6, 1985
    Inventors: Donald E. Hudgin, Mohammad A. Semsarzadeh
  • Patent number: 4495311
    Abstract: A degradable composition is made from a polymer of a mono olefin having 2--3 carbon atoms or styrene and an additive comprising (1) a derivative of an organic compound of a metal which has at least two valence states and (2) a benzoyl derivative of an organic compound or a triazole.
    Type: Grant
    Filed: March 27, 1974
    Date of Patent: January 22, 1985
    Assignee: Princeton Polymer Laboratories, Inc.
    Inventors: Donald E. Hudgin, Thomas Zawadzki
  • Patent number: 4260548
    Abstract: Low molecular weight ethylene homo and copolymer waxes are prepared by using a combination of (1) incremental addition of free radical catalyst (2) at high temperatures up to 150.degree. C. and (3) high pressures up to 3000 psi. Preferably molten aliphatic waxes are used as the solvent.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: April 7, 1981
    Assignee: Princeton Polymer Laboratories
    Inventors: Donald E. Hudgin, Thomas Zawadzki
  • Patent number: 4171699
    Abstract: A steam sterilizable copolymer is prepared from 60 to 50% by weight of alpha methyl styrene and 40 to 50% by weight of methyl methacrylate. The copolymer is useful to make the barrel of syringe which is clear, water-white and shows no distortion upon steam sterilization for at least 20 minutes at 250.degree. F.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: October 23, 1979
    Assignee: Princeton Polymer Laboratories, Inc.
    Inventors: William D. Jones, Donald E. Hudgin
  • Patent number: 4143096
    Abstract: Graft interpolymers comprised of a polyolefin backbone polymer prepared from at least one .alpha.-olefin of two to four carbon atoms onto which is graft copolymerized a mixture of ethylene and carbon monoxide are disclosed.
    Type: Grant
    Filed: December 23, 1977
    Date of Patent: March 6, 1979
    Assignee: Atlantic Richfield Company
    Inventor: Donald E. Hudgin
  • Patent number: 4024326
    Abstract: High melting ethylene-carbon monoxide copolymers are prepared by copolymerizing ethylene and carbon monoxide at relatively low temperatures and pressures using a peroxy dicarbonate catalyst. The preferred catalysts are dicyclohexylperoxydicarbonate and dicetylperoxydicarbonate.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: May 17, 1977
    Assignee: Atlantic Richfield Company
    Inventor: Donald E. Hudgin
  • Patent number: 4024325
    Abstract: High melting ethylene-carbon monoxide copolymers are prepared by copolymerizing ethylene and carbon monoxide at relatively low temperatures and pressures using a peroxy ester of an organic acid having a ten hour half-life temperature of about 60.degree. C. or less, when determined in a 0.2 M solution in benzene, as catalyst. The preferred catalyst is t-butyl peroxypivalate. The reaction is preferably carried out in the presence of dioxane as solvent and t-butyl peroxypivalate as catalyst.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: May 17, 1977
    Assignee: Atlantic Richfield Company
    Inventor: Donald E. Hudgin
  • Patent number: 3997624
    Abstract: Low molecular weight ethylene homo and copolymer waxes are prepared at pressures below 1000 psi and at temperatures below 120.degree. C. using free radical catalysts having 10-hour half-lifes at not over 60.degree. C.
    Type: Grant
    Filed: October 1, 1975
    Date of Patent: December 14, 1976
    Assignee: Princeton Polymer Laboratories, Incorporated
    Inventor: Donald E. Hudgin
  • Patent number: 3984940
    Abstract: Films and containers are made from polymers of propylene such as polypropylene which contains a small amount of stabilizer whereby the rapid degradation rate of polypropylene can be controlled so that it will degrade after predetermined exposure to sunlight. This renders such products especially suited for agricultural mulch films, where they need not be removed after a growing season, and for throw-away containers where they will decompose in garbage dumps or if discarded as litter. The thermal history of the polymer will also affect its degradation rate.The rate is measured in terms of thermally adjusted Langley units (TALU) since it has been found that the ambient temperature affects decomposition as well as the Langley units of solar radiation exposure.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: October 12, 1976
    Inventors: Murray Reich, Donald E. Hudgin
  • Patent number: 3981856
    Abstract: A degradable composition is made from a polymer of a mono olefin having 2-3 carbon atoms or styrene and an additive comprising (1) a derivative of an organic compound of a metal which has at least two valence states and (2) a benzoyl derivative of an organic compound or a triazole.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: September 21, 1976
    Assignee: Princeton Polymer Laboratories, Incorporated
    Inventors: Donald E. Hudgin, Thomas Zawadzki
  • Patent number: 3968082
    Abstract: Ethylene-carbon monoxide copolymer compositions are stabilized against thermal degradation by the incorporation therein of an organic polythiol compound.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: July 6, 1976
    Assignee: Atlantic Richfield Company
    Inventor: Donald E. Hudgin
  • Patent number: 3948850
    Abstract: Ethylene-carbon monoxide copolymer compositions are stabilized against thermal degradation by the incorporation therein of dihydrogen alkali or alkaline earth metal phosphoric acid salts.
    Type: Grant
    Filed: August 29, 1974
    Date of Patent: April 6, 1976
    Assignee: Atlantic Richfield Company
    Inventor: Donald E. Hudgin
  • Patent number: 3948873
    Abstract: An improved method of preparing ethylene-carbon monoxide copolymers using organic peroxide catalysts comprising carrying out the polymerization in the presence of a small amount of potassium dihydrogen phosphate.
    Type: Grant
    Filed: October 10, 1974
    Date of Patent: April 6, 1976
    Assignee: Atlantic Richfield Company
    Inventor: Donald E. Hudgin
  • Patent number: 3948832
    Abstract: Ethylene-carbon monoxide copolymer compositions are stabilized against thermal degradation by the incorporation therein of organic epoxy-containing compounds.
    Type: Grant
    Filed: September 25, 1974
    Date of Patent: April 6, 1976
    Assignee: Atlantic Richfield Company
    Inventor: Donald E. Hudgin