Granted Patent
Utility
US 4,335,016 · App. 06/237,297
Catalyst and method
Inventor:
Robert A. Dombro
Patented Case
View Patent ↗
Granted: Jun 15, 1982
Filed: Feb 23, 1981
Inventor
Robert A. Dombro
Assignee (at issue)
Chemplex, 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.