Granted Patent
Utility
US 4,537,738 · App. 06/524,314
Process for orienting partially crystallized 3-hydroxybutyrate polymers
Inventor:
Paul A. Holmes
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Aug 18, 1983
Inventor
Paul A. Holmes
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.