Granted Patent
Utility
US 4,864,044 · App. 06/702,230
Tin containing activated silicon for the direct reaction
Inventors:
Kenrick M. Lewis, Thomas E. Childress
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Feb 15, 1985
Inventors
Kenrick M. Lewis
Thomas E. Childress
Assignee (at issue)
Union Carbide Corporation
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.