Granted Patent
Utility
US 4,703,029 · App. 06/755,477
Moldings made of silicate material and processes for their preparation
Inventors:
Hans-Peter Rieck, Martin Schott, Jurgen Russow
Patented Case
View Patent ↗
Granted: Oct 27, 1987
Filed: Jul 16, 1985
Inventors
Hans-Peter Rieck
Martin Schott
Jurgen Russow
Assignee (at issue)
Hoechst GmbH
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.