Granted Patent
Utility
US 5,710,234 · App. 08/583,055
Ortho spiroesters and curable and cured resin compositions of same
Inventors:
Koichi Fujishiro, Masaya Furukawa, Kazuhiro Watanabe, Takero Teramoto
Patented Case
View Patent ↗
Granted: Jan 20, 1998
Filed: Jan 19, 1996
Inventors
Koichi Fujishiro
Masaya Furukawa
Kazuhiro Watanabe
Takero Teramoto
Assignees (at issue)
NIPPON STEEL CHEMICAL CO., LTD.
NIPPON STEEL 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.