Patents by Inventor John Robert Campbell

John Robert Campbell 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).

  • Patent number: 5707439
    Abstract: Novel silicate minerals that have undergone a cation exhange with at least one heteroaromatic cation comprising a positively charged organo-substituted heteroatom and/or at least one positively charged heteroatom not part of an aromatic ring with at least one bond having a bond order greater than one and compositions comprising the same are described.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: January 13, 1998
    Assignee: General Electric Company
    Inventors: Tohru Takekoshi, Farid Fouad Khouri, John Robert Campbell, Therese Coste Jordan, Kevin Hsingtao Dai
  • Patent number: 5691411
    Abstract: High performance polymer compositions comprising orthoester or orthocarbonate functionalized olefin polymers and polyphenylene ethers, polyamides or combinations thereof, and the compositions unexpectedly display improved impact resistances and/or decreased delamination.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: November 25, 1997
    Assignee: General Electric Company
    Inventors: Farid Fouad Khouri, John Robert Campbell