Granted Patent
Utility
US 4,830,672 · App. 07/156,825
Zirconia-based coating composition
Inventors:
Kinji Yamada, Masaki Nagata, Siniti Suyama, Momoko Okamura
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Feb 17, 1988
Inventors
Kinji Yamada
Masaki Nagata
Siniti Suyama
Momoko Okamura
Assignee (at issue)
Japan Synthetic Rubber Corporation
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.