Granted Patent
Utility
US 5,190,737 · App. 07/693,507
High yield manufacturing process for silicon carbide
Inventors:
Alan W. Weimer, Raymond P. Roach, John P. Henley
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: Apr 30, 1991
Inventors
Alan W. Weimer
Raymond P. Roach
John P. Henley
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.