Patents by Inventor Raymond Lew DeColibus

Raymond Lew DeColibus 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).

  • Oxidatively stable rigid aromatic polyimide compositions and process for their preparation
    Patent number: 5886129
    Abstract: A rigid, aromatic polyimide composition prepared using a solution imidization process from an aromatic tetracarboxylic dianhydride and a diamine which is greater than 60 mole % to about 85 mole % p-phenylene diamine and 15 mole % to less than 40 mole % m-phenylene diamine exhibits exceptional tensile properties and thermal oxidative stability.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: March 23, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Raymond Lew DeColibus