Granted Patent
Utility
US 5,462,941 · App. 08/215,426
3,6-disubstituted pyradazine derivatives
Inventors:
Norimichi Iwase, Yasuhiro Morinaka, Yoshikuni Tamao, Toshiji Kanayama, Kumi Yamada
Patented Case
View Patent ↗
Granted: Oct 31, 1995
Filed: Mar 21, 1994
Inventors
Norimichi Iwase
Yasuhiro Morinaka
Yoshikuni Tamao
Toshiji Kanayama
Kumi Yamada
Assignee (at issue)
MITSUBISHI CHEMICAL 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.