Patents by Inventor Robert R. Perry

Robert R. Perry 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).

  • Method for producing polyamide-imides from CO, bis-imide and polyamine
    Patent number: 5266679
    Abstract: A method for preparing a polymer including the step of reacting carbon monoxide and a reactant pair having respective general formulas ##STR1## a reactant having the general formula ##STR2## in the presence of catalyst and free iodo or bromo ions. X is --Br or --I. n is an integer from 0 to 4. R.sup.1 is selected from the group consisting of alkyl, arylalkyl, aryl, heteroaryl, and cycloalkyl. R.sup.2 is selected from the group consisting of ##STR3## wherein each R.sup.5 is independently selected from the group consisting of alkyl and aryl, m is an integer from 1-12, and j is an integer between 0 and 300.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: November 30, 1993
    Assignee: Eastman Kodak Company
    Inventors: Robert R. Perry, S. Richard Turner, Richard W. Blevins