Patents by Inventor Finlay D. Aiston

Finlay D. Aiston 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).

  • Leather softening
    Patent number: 5603733
    Abstract: Leather is rendered flexible and water repellent by treatment with a low molecular weight, generally monomeric, amphoteric surfactant having at least one surfactant hydrophobe, at least two cationic groups and at least two anionic groups which are carboxylic groups.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: February 18, 1997
    Assignee: Allied Colloids Limited
    Inventors: Adrian S. Allen, Finlay D. Aiston
  • Leather treatment compositions
    Patent number: 5534035
    Abstract: A copolymer for use in rendering leather water repellant is formed from ethylenically unsaturated monomer and ethylenically unsaturated monofunctional monomer, wherein the monomers include mono- or di- fatty alkyl ester of dicarboxylic acid and a free carboxylic acid monomer and provide a carboxylic acid equivalent weight of 100 to 1000 and at least 20% by weight of fatty alkyl groups.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: July 9, 1996
    Assignee: Allied Colloids Limited
    Inventors: Adrian S. Allen, Finlay D. Aiston