Granted Patent
Utility
US 4,385,136 · App. 06/295,811
Reinforcement promoters for filled thermoplastic polymers
Inventors:
Fred H. Ancker, Arnold C. Ashcraft, Martin S. Leung, Audrey Y. Ku
Patented Case
View Patent ↗
Granted: May 24, 1983
Filed: Aug 27, 1981
Inventors
Fred H. Ancker
Arnold C. Ashcraft
Martin S. Leung
Audrey Y. Ku
Assignee (at issue)
Union Carbide Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.