Granted Patent
Utility
US 5,270,397 · App. 07/904,183
Material for modifying impact resistance
Inventors:
Thomas Rhein, Thomas Suefke, Reiner Mueller
Patented Case
View Patent ↗
Granted: Dec 14, 1993
Filed: Jun 25, 1992
Inventors
Thomas Rhein
Thomas Suefke
Reiner Mueller
Assignee (at issue)
ROHM CO., LTD.
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.