Granted Patent
Utility
US 5,707,446 · App. 08/530,291
Device for producing SiC single crystals
Inventors:
Johannes Volkl, Peter Lanig
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Sep 29, 1995
Inventors
Johannes Volkl
Peter Lanig
Assignee (at issue)
Siemens 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.