Granted Patent
Utility
US 6,509,462 · App. 09/905,945
Estradiol derivative and immunoassy using the same
Inventors:
Noboru Yanaihara, Ikuo Kato, Kazuyuki Kitamura, Tsukasa Kodaira
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Jul 17, 2001
Inventors
Noboru Yanaihara
Ikuo Kato
Kazuyuki Kitamura
Tsukasa Kodaira
Assignees (at issue)
OTSUKA PHARMACEUTICAL CO., LTD.
Yanaihara Institute, Inc.
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.