Granted Patent
Utility
US 5,821,111 · App. 08/808,088
Bioconversion of waste biomass to useful products
Inventors:
James L. Grady, Guang Jiong Chen
Patented Case
View Patent ↗
Granted: Oct 13, 1998
Filed: Feb 28, 1997
Inventors
James L. Grady
Guang Jiong Chen
Assignee (at issue)
Bioengineering Resources, Inc.
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.