Granted Patent
Utility
US 4,917,829 · App. 06/865,934
3,7,11,15-Tetramethyl-2,4,6,10,14,-hexadecapentaendic acid
Inventors:
Isao Yamatsu, Yuichi Inai, Shinya Abe, Takeshi Suzuki, Yoshikazu Suzuki, Osamu Tagaya, Kouichi Suzuki, Koichi Abe, Kouji Yamada
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: May 16, 1986
Inventors
Isao Yamatsu
Yuichi Inai
Shinya Abe
Takeshi Suzuki
Yoshikazu Suzuki
Osamu Tagaya
Kouichi Suzuki
Koichi Abe
Kouji Yamada
Assignee (at issue)
Eisai 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.