Patents by Inventor Frank J. Williams

Frank J. Williams 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).

  • Dianhydrides of bis-(orthodicarboxyphenyloxyphenyl)acetylene and bis-(ortho-dicarboxyphenyloxyphenyl)2,2-dichloroethylene
    Patent number: 3956322
    Abstract: The invention is concerned with dianhydrides derived from either tolane or 1,1-bis(p-hydroxyphenyl)2,2-dichloroethylene. These dianhydrides can be reacted with organic diamines to form polyetherimides useful in the molding art.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: May 11, 1976
    Assignee: General Electric Company
    Inventors: Clayton B. Quinn, Frank J. Williams
  • Novel polyetherimides prepared from tolane dianhydride or dichloroethylene diphenylene dianhydride
    Patent number: 3944517
    Abstract: This invention is concerned with polyetherimides derived from the reaction of an organic diamine and a dianhydride selected from the class consisting of a tolane dianhydride and a dichloroethylene diphenylene dianhydride.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: March 16, 1976
    Assignee: General Electric Company
    Inventors: Clayton B. Quinn, Frank J. Williams
  • Aromatic dithio dianhydrides
    Patent number: 3933862
    Abstract: There are provided bis(thioether) aromatic dianhydrides and method for making these materials. A bisthiol in the presence of base, or bisthiol basic salt, can be reacted with a nitro- or halo-substituted phthalic compound, such as an anhydride or anhydride precursor. These aromatic dithiodianhydrides can be used to make polyimides and polyesters, and can be used as curing agents for epoxy resins.
    Type: Grant
    Filed: August 23, 1974
    Date of Patent: January 20, 1976
    Assignee: General Electric Company
    Inventor: Frank J. Williams, III
  • Polythioetherimides and method of preparation
    Patent number: 3933749
    Abstract: Polythioetherimides are provided and a method for making such materials. Aromatic bis(thioetheranhydride)s are reacted with organic diamine in the presence of organic solvent, or in the melt. The polythioetherimides are injection moldable thermoplastics which can be used to make high performance composites.
    Type: Grant
    Filed: August 23, 1974
    Date of Patent: January 20, 1976
    Assignee: General Electric Company
    Inventor: Frank J. Williams, III