Granted Patent
Utility
US 4,918,172 · App. 07/252,636
Anthracycline antibiotics
Inventors:
Akihiro Yoshimoto, Osamu Jodo, Yoshio Watanabe, Rokuro Okamoto, Tomoyuki Ishikura, Hiroshi Naganawa, Tsutomu Sawa, Tomio Takeuchi
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Oct 3, 1988
Inventors
Akihiro Yoshimoto
Osamu Jodo
Yoshio Watanabe
Rokuro Okamoto
Tomoyuki Ishikura
Hiroshi Naganawa
Tsutomu Sawa
Tomio Takeuchi
Assignee (at issue)
Sanraku Incorporated
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.