Granted Patent
Utility
US 4,510,273 · App. 06/446,354
Thixotropic agent
Inventors:
Yoshikazu Miura, Koji Horimoto, Takenori Sumida
Patented Case
View Patent ↗
Granted: Apr 9, 1985
Filed: Dec 2, 1982
Inventors
Yoshikazu Miura
Koji Horimoto
Takenori Sumida
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.