Granted Patent
Utility
US 5,236,758 · App. 07/669,738
Heat insulator and method of making same
Inventors:
Gerhard Sextl, Roland Reuter, Hans Strack, Peter Kleinschmit, Rudolf Schwarz
Patented Case
View Patent ↗
Granted: Aug 17, 1993
Filed: Mar 15, 1991
Inventors
Gerhard Sextl
Roland Reuter
Hans Strack
Peter Kleinschmit
Rudolf Schwarz
Assignee (at issue)
Degussa 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.