Granted Patent
Utility
US 5,219,884 · App. 07/465,201
Immunosuppressant
Inventors:
Tetsuro Fujita, Takeshi Ikumoto, Shigeo Sasaki, Takeki Okumoto, Kenji Chiba
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Mar 1, 1990
Inventors
Tetsuro Fujita
Takeshi Ikumoto
Shigeo Sasaki
Takeki Okumoto
Kenji Chiba
Assignees (at issue)
Kabushiki Kaisha Taito
Yoshitomi Pharmaceutical Industries, 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.