Granted Patent
Utility
US 5,560,851 · App. 08/338,097
Process for producing ceramic heating elements
Inventors:
Alfred Thimm, Heinz Groschwitz, Peter Besold
Patented Case
View Patent ↗
Granted: Oct 1, 1996
Filed: Nov 9, 1994
Inventors
Alfred Thimm
Heinz Groschwitz
Peter Besold
Assignee (at issue)
Hoechst Ceramtec AG
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.