Granted Patent
Utility
US 4,267,312 · App. 06/075,302
Anthracycline derivatives and process for preparing the same
Inventors:
Toshikazu Oki, Akihiro Yoshimoto, Taiji Inui, Tomio Takeuchi, Hamao Umezawa
Patented Case
View Patent ↗
Granted: May 12, 1981
Filed: Sep 12, 1979
Inventors
Toshikazu Oki
Akihiro Yoshimoto
Taiji Inui
Tomio Takeuchi
Hamao Umezawa
Assignee (at issue)
Sanraku-Ocean Co., Ltd.
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.