Patents by Inventor Walter J. Sparzak

Walter J. Sparzak 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: 5087521
    Abstract: It has been found that the properties of poly(vinyl chloride) based polymers are substantially enhanced through the use of a specific plasticizer system. In particular, the use of specific triarylphosphates in combination with specific diarylphosphates in specific proportions not only plasticizes the PVC polymer but produces a transparent, flame retardant heat resistant, easily worked polymer. These materials are used so that the diarylphosphate is 30-45% of the total concentration of the phosphates and such that 45 to 70 parts of the phosphates are present per 100 parts of the polymer.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: February 11, 1992
    Assignee: AT&T Bell Laboratories
    Inventors: Jae H. Choi, John J. Mottine, Walter J. Sparzak, Sr., Walter D. Tates, William C. Vesperman
  • Patent number: 4582867
    Abstract: A jacketed telephone cord is jacketed with a clear, flame retardant, stable composition which essentially does not exhibit vertical burn characteristics comprising an all phosphate plasticized PVC stabilized with the combination of a metallic stabilizer and a cycloaliphatic epoxy.
    Type: Grant
    Filed: June 17, 1982
    Date of Patent: April 15, 1986
    Assignees: AT&T Technologies, Inc., Bell Telephone Laboratories
    Inventors: Jae H. Choi, John J. Mottine, Jr., Walter J. Sparzak, Sr., William C. Vesperman
  • Patent number: 4346145
    Abstract: A jacketed telephone cord is jacketed with a clear, flame retardant, stable composition which essentially does not exhibit vertical burn characteristics comprising an all phosphate plasticized PVC stabilized with the combination of a metallic stabilizer and a cycloaliphatic epoxy.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: August 24, 1982
    Assignees: Western Electric Co., Inc., Bell Telephone Laboratories, Incorporated
    Inventors: Jae H. Choi, John J. Mottine, Jr., Walter J. Sparzak, Sr., William C. Vesperman
  • Patent number: 4123585
    Abstract: A polymeric composition is disclosed. The composition comprises a solid halide polymer, selected from vinyl halide polymers and vinylidene halide polymers, a terpolymer comprising by weight (a) 40 to 80 percent ethylene, (b) 3 to 30 percent carbon monoxide and (c) 5 to 60 percent of one or more monomers copolymerizable therewith in order to produce solid copolymers and a mixture comprising (a') a mixed alkyl phthalate and (b') a copolymer of from about 5 to about 95 percent by weight of an alkyl acrylate wherein the alkyl radical contains from 1 to 12 carbon atoms and from about 95 to about 5 percent by weight of a dissimilar alkyl acrylate wherein the alkyl radical contains from 3 to 24 carbon atoms, the alkyl phthalate being present in an amount by weight at least equal to the amount of the copolymer (b').
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: October 31, 1978
    Assignee: Western Electric Company, Inc.
    Inventors: Walter J. Sparzak, William C. Vesperman