Granted Patent
Utility
US 4,839,088 · App. 07/009,829
Polysaccharide compositions
Inventor:
Donald C. Young
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Feb 2, 1987
Inventor
Donald C. Young
Assignee (at issue)
Union Oil Company of California
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.