Granted Patent
Utility
US 5,643,564 · App. 08/455,661
Glycosylated cytokines
Inventors:
Naoru Hamaguchi, Jun Sato, Kazuhiro Doken
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: May 31, 1995
Inventors
Naoru Hamaguchi
Jun Sato
Kazuhiro Doken
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.