Granted Patent
Utility
US 5,091,346 · App. 07/251,380
Composition for producing ceramics
Inventors:
Hiroshi Inoue, Chikara Igarashi, Takeshi Muranaka
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Sep 15, 1988
Inventors
Hiroshi Inoue
Chikara Igarashi
Takeshi Muranaka
Assignee (at issue)
Mitsui Petrochemical Industries, 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.