Granted Patent
Utility
US 5,641,920 · App. 08/525,378
Powder and binder systems for use in powder molding
Inventors:
Karl Frank Hens, Joseph A. Grohowski, JR.
Patented Case
View Patent ↗
Granted: Jun 24, 1997
Filed: Sep 7, 1995
Inventors
Karl Frank Hens
Joseph A. Grohowski, JR.
Assignee (at issue)
Thermat Precision Technology, Inc.
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.