Patents by Inventor Terry Carl Pletcher

Terry Carl Pletcher 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).

  • Copolyester capable of forming anisotropic melt and shaped articles thereof
    Patent number: 4066620
    Abstract: This invention relates to a class of novel copolyesters derived from terephthalic acid and derivatives of methyl- or chlorohydroquinone and bis(4-hydroxyphenyl)ether, and to the fibers and other shaped articles prepared therefrom. Also comprehended by this invention are the novel, optically anisotropic copolyester melts from which these fibers can be prepared.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: January 3, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Jacob John Kleinschuster, Terry Carl Pletcher
  • Copolyesters of derivatives of hydroquinone
    Patent number: 3991013
    Abstract: This invention relates to a class of novel copolyesters derived from derivatives of hydroquinone and a mixture of ethylenedioxy-4,4'-dibenzoic acid with terephthalic, bibenzoic, hexahydroterephthalic acids or 2,6-naphthalenedicarboxylic acid and to the fibers and other shaped articles prepared therefrom. Also comprehended by this invention are the novel, optically anisotropic copolyester melts from which these shaped articles can be prepared.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: November 9, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Terry Carl Pletcher