Granted Patent
Utility
US 4,373,094 · App. 06/288,072
Anthracycline derivatives
Inventors:
Toshikazu Oki, Yasue Matsuzawa, Tomoyuki Ishikura, Tomio Takeuchi, Hamao Umezawa
Patented Case
View Patent ↗
Granted: Feb 8, 1983
Filed: Jul 29, 1981
Inventors
Toshikazu Oki
Yasue Matsuzawa
Tomoyuki Ishikura
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.