Granted Patent
Utility
US 5,087,722 · App. 07/592,314
Process for producing norcamphane dicarbonitriles
Inventors:
Masamitu Inomata, Naokazu Shiotani, Kazuo Koshizuka, Minato Karasawa
Patented Case
View Patent ↗
Granted: Feb 11, 1992
Filed: Oct 3, 1990
Inventors
Masamitu Inomata
Naokazu Shiotani
Kazuo Koshizuka
Minato Karasawa
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.