Patents by Inventor Ronald D. Fiedler

Ronald D. Fiedler 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).

  • Process for the production of latexes by the selective monomer addition
    Patent number: 5191008
    Abstract: The present invention relates to a free radical emulsion polymerization process. The latex is prepared by polymerizing (a) at least one conjugated diene, (b) at least one non-carboxylic vinyl aromatic or aliphatic comonomer selected from the group consisting of styrene, .alpha.-methyl styrene, p-methyl styrene, vinyl toluene, acrylonitrile, methacrylonitrile, vinylidene chloride, ethyl acrylate, butyl acrylate, vinyl pyridine, methylmethacrylate, hexylacrylate, 2-ethyl hexyl acrylate or mixtures thereof, and (c) at least one ethylenically unsaturated carboxylic acid monomer selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, fumaric acid, .beta.-carboxyethyl acrylate, itaconic acid or mixtures thereof.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: March 2, 1993
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Howard H. Frost, Pamela S. Graham, Ronald D. Fiedler, Ramesh N. Gujarathi
  • Process for the synthesis and purification of diisopropenylbenzene
    Patent number: 4755627
    Abstract: Diisopropenylbenzene is a monomer that can be used in the preparation of many useful polymers and is also a chemical intermediate that can be employed in a number of chemical processes. Diisopropenylbenzene is normally synthesized by the dehydrogenation of diisopropylbenzene. Unfortunately in this dehydrogenation process a number of olefinic impurities are produced as by-products. This invention discloses a process for the separation of diisopropenylbenzene from these impurities and for recycling some of the impurities.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: July 5, 1988
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Howard A. Colvin, Ronald D. Fiedler, Joel Muse, Jr., Donald E. Smith
  • Process for the synthesis and purification of diisopropenylbenzene
    Patent number: 4528413
    Abstract: Diisopropenylbenzene is a monomer that can be used in the preparation of many useful polymers and is also a chemical intermediate that can be employed in a number of chemical processes. Diisopropenylbenzene is normally synthesized by the dehydrogenation of diisopropylbenzene. Unfortunately in this dehydrogenation process a number of olefinic impurities are produced as by-products. This invention discloses a process for the separation of diisopropenylbenzene from these impurities and for recycling some of the impurities.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: July 9, 1985
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Howard A. Colvin, Ronald D. Fiedler, Joel Muse, Jr., Donald E. Smith