Patents by Inventor Robert M. Finch

Robert M. Finch 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-ether polymers
    Patent number: H1669
    Abstract: A segmented copolyester-ether polymer comprises 9.5 to 33 percent by weight hard segment residues of polybutylene terephthalate and 0.5 to 67 percent by weight soft segment residues of a polyether polyol comprised of n units of residue (1) and m units of residue (2), wherein the total value of n+m is in the range 2 to 70, m/(n+m) is in the range 0.05 to 0.98, and residues (1) and (2) have the structures: ##STR1## The polyether polyol is further characterized in that at least 95 percent of the hydroxyl groups are primary hydroxyl groups.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: July 1, 1997
    Assignee: Eastman Chemical Company
    Inventors: James C. Matayabas, Jr., James T. Tanner, III, Robert M. Finch