Patents by Inventor Ralph H. Colby

Ralph H. Colby 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).

  • Compatible polyamide blends
    Patent number: 5302662
    Abstract: Novel blends have been discovered comprising: (A) a polyamide; (B) a polymer that is miscible with polystrene; and (C) a compatibilizer comprising a copolymer having repeating units derived from an aromatic vinyl compound monomer and repeating units derived from vinylphenol monomers, wherein at least about 50% of said aromatic vinyl compound monomers are styrene monomeric units. The blends show improvements in mechanical properties as compared to similar blends without the compatibilizer.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: April 12, 1994
    Assignee: Eastman Kodak Company
    Inventors: Christine J. Landry, Dennis J. Massa, Timothy E. Long, Michael R. Landry, David M. Teegarden, Ralph H. Colby
  • Compatible polyester blends
    Patent number: 5276089
    Abstract: There is disclosed a blend of certain polyesters and polymers that are miscible with polystyrene, such as polyphenylene oxide. The blend is characterized by the presence of a compatibilizing amount of a copolymer having repeating units derived from an aromatic vinyl compound monomer and a vinylphenol monomer. The polyester is thermoplastic and is characterized in that the diacid component of the polyester includes aromatic groups and the diol component comprises at least about 20 percent by weight of a noncyclic, aliphatic diol.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: January 4, 1994
    Assignee: Eastman Kodak Company
    Inventors: Ralph H. Colby, Christine J. T. Landry, Michael R. Landry, Timothy E. Long, Dennis J. Massa, David M. Teegarden
  • Miscible blends of polyamides and vinylphenol containing polymers
    Patent number: 5250624
    Abstract: A miscible blend composition comprising (a) a polyamide having a melting point greater than about 175.degree. C. or is amorphous and (b) a vinylphenol containing polymer. The blend is particularly useful for packaging applications due to its chemical resistance and clarity.
    Type: Grant
    Filed: May 7, 1992
    Date of Patent: October 5, 1993
    Assignee: Eastman Kodak Company
    Inventors: David M. Teegarden, Christine J. T. Landry, Michael R. Landry, Timothy E. Long, Dennis J. Massa, Ralph H. Colby