Granted Patent
Utility
US 4,144,207 · App. 05/864,415
Composition and process for injection molding ceramic materials
Inventor:
Roger W. Ohnsorg
Patented Case
View Patent ↗
Granted: Mar 13, 1979
Filed: Dec 27, 1977
Inventor
Roger W. Ohnsorg
Assignee (at issue)
Carborundum Corporation
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.