Patents by Inventor Ronald L. Hemingway

Ronald L. Hemingway 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).

  • Liquid fabric softener
    Patent number: 4855072
    Abstract: Liquid fabric softening compositions for use in a rinse bath after washing fabrics with a detergent. The softening compositions contain (a) the reaction products of higher fatty acids with a polyamine selected from the group consisting of hydroxyalkylalkylenediamines and dialkylenetriamines and mixtures thereof, (b) cationic nitrogenous salts having only one long chain acyclic aliphatic hydrocarbon group, and optionally (c) cationic nitrogenous salts having two or more long chain acyclic aliphatic hydrocarbon groups or one said group and an arylalkyl group; these compositions provide good softening performance across major types of detergents.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: August 8, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Errol H. Wahl, Donald M. Swartley, Ronald L. Hemingway
  • Liquid fabric softener
    Patent number: 4661269
    Abstract: Liquid fabric softening compositions for use in a rinse bath after washing fabrics with a detergent. The softening compositions contain (a) the reaction products of higher fatty acids with a polyamine selected from the group consisting of hydroxyalkylalkylenediamines and dialkylenetriamines and mixtures thereof, (b) cationic nitrogenous salts having only one long chain acyclic aliphatic hydrocarbon group, and optionally (c) cationic nitrogenous salts having two or more long chain acyclic aliphatic hydrocarbon groups or one said group and an arylalkyl group; these compositions provide good softening performance across major types of detergents.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: April 28, 1987
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Errol H. Wahl, Donald M. Swartley, Ronald L. Hemingway