Granted Patent
Utility
US 4,612,372 · App. 06/754,568
Tylosin derivatives
Inventors:
Takeo Yoshioka, Miharu Maeda, Rokuro Okamoto, Yasutaka Shimauchi, Tomoyuki Ishikura, Tsutomu Sawa, Tomio Takeuchi, Hamao Umezawa
Patented Case
View Patent ↗
Granted: Sep 16, 1986
Filed: Jul 12, 1985
Inventors
Takeo Yoshioka
Miharu Maeda
Rokuro Okamoto
Yasutaka Shimauchi
Tomoyuki Ishikura
Tsutomu Sawa
Tomio Takeuchi
Hamao Umezawa
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.