Patents by Inventor James J. Tazuma

James J. Tazuma 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).

  • Polymeric diphenyldiamines
    Patent number: 5049625
    Abstract: This invention relates to a novel class of polymeric compositions which have molecular weights ranging from 300 to 3000 and are the reaction product of (a) an alkyl or cycloalkyl substituted diphenyldiamine and (b) a conjugated or nonconjugated diene. The polymeric diphenyldiamine compounds are particularly useful as an antiozonant in diene containing polymers.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: September 17, 1991
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: James J. Tazuma, Lawson G. Wideman, Paul H. Sandstrom
  • Process for preparing N-polythiodimorpholines
    Patent number: 4656266
    Abstract: This invention relates to a new process for the preparation of N-polythiodimorpholines wherein morpholine and elemental sulfur in an alcohol mixture are oxidized with an alkali metal hypohalite or an alkaline earth metal hypohalite or N-chloromorpholine to yield N-polythiodimorpholines. The process produces N-polythiodimorpholines without the use of corrosive or toxic chemicals and the product is an economical substitute for conventional rubber curatives.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: April 7, 1987
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Angelo Bergomi, James J. Tazuma
  • Process for preparing N-polythiodimorpholines
    Patent number: 4632988
    Abstract: This invention relates to a new process for the preparation of N-polythiodimorpholines wherein morpholine and elemental sulfur in an alcohol mixture are oxidized with an alkali metal hypohalite or an alkaline earth metal hypohalite or N-chloromorpholine to yield N-polythiodimorpholines. The process produces N-polythiodimorpholines without the use of corrosive or toxic chemicals and the product is an economical substitute for conventional rubber curatives.
    Type: Grant
    Filed: April 30, 1985
    Date of Patent: December 30, 1986
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Angelo Bergomi, James J. Tazuma
  • Process for the preparation of N-tetrathiodimorpholine
    Patent number: 4621139
    Abstract: There is disclosed a process for the preparation of N-tetrathiodimorpholine wherein an admixture of morpholine and elemental sulfur is oxidized with air or oxygen in the presence of iron salts and iron complexes to yield N-tetrathiodimorpholine.
    Type: Grant
    Filed: October 10, 1985
    Date of Patent: November 4, 1986
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: James J. Tazuma
  • Polymeric compounds prepared from diphenylamine and dialkylalkenylbenzene or dihydroxyalkylbenzene
    Patent number: 4537952
    Abstract: This invention discloses a novel class of polymeric diphenylamine compounds. The compounds are produced by reacting diphenylamine with a dialkylalkenylbenzene or dihydroxyalkylbenzene having either meta or para orientation in the presence of an acid catalyst.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: August 27, 1985
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Richard E. Gloth, James J. Tazuma, Robert A. Smith
  • Finishing process for the removal of sulfur compounds from a gas stream
    Patent number: 4462968
    Abstract: The invention relates to a finishing process for the removal of low level concentrations of mercaptans, sulfides and disulfides from a gas stream, especially a natural gas stream. The sulfur compounds are washed from the gas stream with a solution containing hydrogen peroxide, sodium carbonate or sodium hydroxide, and ammonia or an amine.
    Type: Grant
    Filed: August 23, 1982
    Date of Patent: July 31, 1984
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: James J. Tazuma, Kenneth J. Frech
  • Method of preparing dibenzothiazolyl disulfides
    Patent number: 4463178
    Abstract: There is disclosed an improved method of preparing dibenzothiazolyl disulfides by oxidizing mercaptobenzothiazole with hydrogen peroxide in the presence of an amine. The invention has particular utility by providing a relatively pollution free method of preparing dibenzothiazolyl disulfides.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: July 31, 1984
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: James J. Tazuma
  • Polymeric compounds prepared from diphenylamine and dihydroxyalkylbenzene
    Patent number: 4463170
    Abstract: This invention discloses a novel class of polymeric diphenylamine compounds. The compounds are produced by reacting diphenylamine with a dihydroxyalkylbenzene having either meta or para orientation in the presence of an acid catalyst. The polymeric diphenylamine compounds are useful as antioxidants.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: July 31, 1984
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Richard E. Gloth, James J. Tazuma, Robert A. Smith
  • Sulfur removal from a gas stream
    Patent number: 4435371
    Abstract: There is disclosed a process for removing sulfur compounds from a gas stream. The process involves passing the gas stream containing the sulfur compounds through a mass of porous material that has deposited upon it a metal oxide, the improvement comprises the continuous or intermittent addition of an oxidizing agent and an amine.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: March 6, 1984
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Kenneth J. Frech, James J. Tazuma
  • Polymeric antioxidants prepared from diphenyalmine and dialkylalkenylbenzene or dihydroxyalkylbenzene
    Patent number: 4417017
    Abstract: A class of novel polymeric diphenylamine compounds are used to provide antioxidant protection to oxidizable polymers. In particular, the polymeric reaction products of diphenylamine and 1,4-diisopropenylbenzene are used in acrylonitrilebutadiene and styrene-butadiene rubbers to protect these rubbers in high temperature, oxidative working environments.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: November 22, 1983
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Richard E. Gloth, James J. Tazuma
  • Stabilized polyester compositions
    Patent number: 4414348
    Abstract: There is disclosed a method for stabilization of polyester resins by incorporating in the resins novel polymeric diphenylamine compounds, produced by reacting diphenylamine with a dialkylalkenylbenzene or a dihydroxyalkylbenzene in the presence of an acid catalyst.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: November 8, 1983
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Richard E. Gloth, James J. Tazuma, Max H. Keck
  • Stabilized polyester composition
    Patent number: 4330462
    Abstract: There is disclosed a method for the stabilization of polyester resins by incorporating in the resins certain types of 4-mercaptophenol derivatives.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: May 18, 1982
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Max H. Keck, Richard E. Gloth, James J. Tazuma
  • Method for removal of sulfur compounds from a gas stream
    Patent number: 4311680
    Abstract: This invention relates to a process for the removal of sulfur compounds from a gas stream. More specifically, this invention relates to an improvement in the iron oxide method of sulfur removal from a gas stream through the use of hydrogen peroxide.
    Type: Grant
    Filed: November 20, 1980
    Date of Patent: January 19, 1982
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Kenneth J. Frech, James J. Tazuma
  • Method for removal of sulfur compounds from a gas
    Patent number: 4283373
    Abstract: This invention relates to a process for the removal of sulfur compounds from a gas stream which consists of contacting said gas stream with alkali metal salts of sulfonamides or resins containing sulfonamide functionalities.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: August 11, 1981
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Kenneth J. Frech, James J. Tazuma
  • Indane containing polymers
    Patent number: 4205160
    Abstract: The invention relates to polymers containing units of indane, 1-pentene and 2-pentene. These polymers can be formed by the polymerization of meta- or para-diisopropyl benzene diol or by the polymerization of meta- or para-diisopropenyl benzene in the presence of acid activated clay or other acidic catalysts.
    Type: Grant
    Filed: March 11, 1976
    Date of Patent: May 27, 1980
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Richard E. Gloth, James J. Tazuma
  • Method of preparing tetraalkyl thiuram disulfides
    Patent number: 4144272
    Abstract: Method of preparing tetraalkyl thiuram disulfides by racting a secondary amine with carbon disulfide in a substantially neutral solution of a saturated aliphatic alcohol and oxidizing the dithiocarbamate formed thereby with a hydroperoxide. The invention has particular utility by providing a relatively pollution-free method of preparing tetraalkyl thiuram disulfides.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: March 13, 1979
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Angelo Bergomi, James J. Tazuma
  • Method of preparing dibenzothiazolyl disulfides
    Patent number: 4143045
    Abstract: Method of preparing dibenzothiazolyl disulfides by oxidizing mercaptobenzothiazole in a substantially neutral saturated aliphatic alcohol solution with a hydroperoxide. The invention has particular utility by providing a relatively pollution-free method of preparing dibenzothiazolyl disulfides.
    Type: Grant
    Filed: November 17, 1977
    Date of Patent: March 6, 1979
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: James J. Tazuma, Angelo Bergomi
  • Metal salts of modified anhydride resin
    Patent number: 4108944
    Abstract: A metal salt of an anhydride modified resin prepared by reacting an aqueous medium (A) a water soluble metal salt and (B) the sodium or potassium salt of the acid of said anhydride modified resin or (C) the sodium or potassium salt of the half acid/half ester of said anhydride modified resin. Such metal salts may have utility as additives for constituents in pressure sensitive adhesives and as tackifying agents.
    Type: Grant
    Filed: September 22, 1977
    Date of Patent: August 22, 1978
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: James J. Tazuma, Mario D. Zadra
  • Soaps of maleic anhydride adducts of alpha-methylstyrene and alpha-methylstyrene dimer
    Patent number: 4098718
    Abstract: Stable surface-active agents are produced by neutralizing the reaction product of maleic anhydride adducts of alpha-methylstyrene compounds and alpha-methylstyrene dimer compounds with sodium and potassium hydroxide solution.
    Type: Grant
    Filed: April 22, 1977
    Date of Patent: July 4, 1978
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Mario D. Zadra, James J. Tazuma
  • Method of reducing the .alpha.-acetylene content of hydrocarbon
    Patent number: 4087477
    Abstract: Hydrocarbon fraction containing diolefins and .alpha.-acetylenes are treated with base-modified catalyst to reduce the .alpha.-acetylene content. The base-modified catalyst comprises a support such as alumina containing an alkali metal hydroxide and related bases.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: May 2, 1978
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: James J. Tazuma, Angelo Bergomi