Granted Patent
Utility
US 4,966,929 · App. 07/381,201
Composition having damping property, damping member, process for preparation of damping member and method of using damping member
Inventors:
Toru Tomoshige, Yasumasa Fujii, Youhei Suzuki, Kenji Yokoyama, Yoshio Iida
Patented Case
View Patent ↗
Granted: Oct 30, 1990
Filed: Jul 18, 1989
Inventors
Toru Tomoshige
Yasumasa Fujii
Youhei Suzuki
Kenji Yokoyama
Yoshio Iida
Assignees (at issue)
Mitsu Petrochemical Ind., Ltd.
NEC Environment Engineering 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.