Granted Patent
Utility
US 6,258,561 · App. 09/421,208
Method of producing a 19P2 ligand
Inventors:
Suenaga Masato, Moriya Takeo, Tanaka Yoko, Nishimura Osamu
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Oct 20, 1999
Inventors
Suenaga Masato
Moriya Takeo
Tanaka Yoko
Nishimura Osamu
Assignee (at issue)
Takeda Chemical 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.