Granted Patent
Utility
US 5,081,284 · App. 07/373,811
Proteinase inhibitor
Inventors:
Naoki Higuchi, Masayuki Saitoh, Norio Iwasawa, Motoo Sumida, Hiroshi Shibata
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Jun 29, 1989
Inventors
Naoki Higuchi
Masayuki Saitoh
Norio Iwasawa
Motoo Sumida
Hiroshi Shibata
Assignee (at issue)
SUNTORY HOLDINGS LIMITED
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.