Granted Patent
Utility
US 4,978,707 · App. 07/015,223
Aqueous dispersion and process for preparation thereof
Inventors:
Mutsuhiro Tanaka, Shiro Honma
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: Feb 17, 1987
Inventors
Mutsuhiro Tanaka
Shiro Honma
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.