Patents by Inventor Keith Allen Alderfer

Keith Allen Alderfer 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).

  • Polymer composition
    Patent number: 7795343
    Abstract: A polymer composition including polymer particles comprising a first polymer and a second polymer is disclosed. The first polymer optionally has a crosslinked core and has a glass transition temperature in the range of ?30° C. to 100° C. The second polymer comprising select crosslinking groups has a glass transition temperature in the range of ?10° C. to less than 18° C. A coating composition comprising the polymer composition is provided. The polymer composition has good low temperature film formation and provides a film with an acceptable level of hardness.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: September 14, 2010
    Assignee: Rohm and Haas Company
    Inventors: Keith Allen Alderfer, Gary William Dombrowski, John Charles Halligan, Kenneth Lennon, Jr.
  • Polymer composition
    Publication number: 20080139737
    Abstract: A polymer composition including polymer particles comprising a first polymer and a second polymer is disclosed. The first polymer optionally has a crosslinked core and has a glass transition temperature in the range of ?30° C. to 100° C. The second polymer comprising select crosslinking groups has a glass transition temperature in the range of ?10° C. to less than 18° C. A coating composition comprising the polymer composition is provided. The polymer composition has good low temperature film formation and provides a film with an acceptable level of hardness.
    Type: Application
    Filed: December 12, 2006
    Publication date: June 12, 2008
    Inventors: Keith Allen Alderfer, Gary William Dombrowski, John Charles Halligan, Kenneth Lennon