Patents by Inventor Bruce Petty-Weeks

Bruce Petty-Weeks 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 purification of crude p-hydroxymethylbenzoic acid
    Patent number: 4812594
    Abstract: Aqueous solutions of crude p-hydroxymethylbenzoic acid are purified to relatively low levels of 4-carboxybenzaldehyde by hydrogenation in the presence of a nickel on kieselguhr catalyst. 4-carboxybenzaldehyde is hydrogenated to p-hydroxymethylbenzoic acid. Toluic acid production is minimal.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: March 14, 1989
    Assignee: Amoco Corporation
    Inventor: Bruce Petty-Weeks
  • Process for purification of p-hydroxymethylbenzoic acid
    Patent number: 4447645
    Abstract: Disclosed is a process for purification of p-hydroxymethylbenzoic acid containing 4-carboxybenzaldehyde, p-toluic acid and terephthalic acid impurities.
    Type: Grant
    Filed: November 30, 1982
    Date of Patent: May 8, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: John A. Donohue, James O. Knobloch, Bruce Petty-Weeks, Steven A. Cerefice
  • Polyamides and copolyamides comprising -1,2-di(p-aminophenoxy) ethane moieties
    Patent number: 4393162
    Abstract: Novel polyamides and copolyamides are prepared from 1,2-di(p-aminophenoxy) ethane and diacids or mixtures of 1,2-di(p-aminophenoxy) ethane and other diamines and diacids. These polyamides and copolyamides are useful as molded objects, fiber, films, laminate and coating.
    Type: Grant
    Filed: May 14, 1982
    Date of Patent: July 12, 1983
    Assignee: Standard Oil Company (Indiana)
    Inventors: Edward E. Paschke, C. Bruce Petty-Weeks