Granted Patent
Utility
US 4,929,550 · App. 07/145,819
Process for the production of microbial cellulose
Inventor:
David Byrom
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Jan 19, 1988
Inventor
David Byrom
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.