Granted Patent
Utility
US 5,490,477 · App. 08/125,937
Process for the production of semiconductor foils and their use
Inventors:
Philippe Knauth, Horst Lange, Ingo Schwirtlich, Karsten Wambach
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Sep 23, 1993
Inventors
Philippe Knauth
Horst Lange
Ingo Schwirtlich
Karsten Wambach
Assignee (at issue)
Bayer Aktiengesellschaft
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.