Patents Represented by Attorney Elizabeth Tweedy

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  • Amidification products of C.sub.19 dicarboxylic acid and cyclical diamines
    Patent number: 3937687
    Abstract: Polyamids of a C.sub.19 diacid and certain cyclical diamine which are excellent engineering plastics.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: February 10, 1976
    Assignee: General Mills Chemicals, Inc.
    Inventors: Edgar R. Rogier, Allan H. Jevne, Gerald L. Schwebke
  • Copolyamides from an isomeric mixture of heptadecane dicarboxylic acid
    Patent number: 3937688
    Abstract: Copolyamides of a C.sub.19 diacid, a coacid selected from isophthalic acid, terephthalic acid, alkyl substituted isophthalic acid or esters thereof and a diamine selected from hexamethylene diamine and trimethyl hexamethylene diamine.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: February 10, 1976
    Assignee: General Mills Chemicals, Inc.
    Inventors: Edgar R. Rogier, Allan H. Jevne, Gerald L. Schwebke
  • Acid compositions comprised of polymeric 2-acrylamido-2-methylpropanesulfonic acid as thickener
    Patent number: 3931089
    Abstract: Acid solutions having pH values of about 2 or below and containing a homopolymer of 2-acrylamido-2-methylpropanesulfonic acid or a salt of the homopolymer.
    Type: Grant
    Filed: June 6, 1974
    Date of Patent: January 6, 1976
    Assignee: General Mills Chemicals, Inc.
    Inventor: Curtis Lee Karl