Granted Patent
Utility
US 4,957,588 · App. 07/437,518
Method for high temperature reaction process
Inventors:
Mitsunobu Koshiba, Yoshiyuki Harita, Yuuji Furuto, Bruno Roland, Ria Lombaerts
Patented Case
View Patent ↗
Granted: Sep 18, 1990
Filed: Nov 16, 1989
Inventors
Mitsunobu Koshiba
Yoshiyuki Harita
Yuuji Furuto
Bruno Roland
Ria Lombaerts
Assignees (at issue)
Japan Synthetic Rubber Corporation
UCB, Inc.
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.