Granted Patent
Utility
US 4,427,611 · App. 06/433,995
Process for preparing calcium silicate shaped product
Inventors:
Yasuo Oguri, Mitsuru Awata, Junji Saito, Soichi Inoue, Tatsuo Andio, Mitsunobu Abe
Patented Case
View Patent ↗
Granted: Jan 24, 1984
Filed: Oct 13, 1982
Inventors
Yasuo Oguri
Mitsuru Awata
Junji Saito
Soichi Inoue
Tatsuo Andio
Mitsunobu Abe
Assignee (at issue)
Mitsubishi Chemical 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.