Granted Patent
Utility
US 6,413,495 · App. 09/743,448
X-ray intercepting metal complexes of chlorin derivatives
Inventors:
Katsuo Aizawa, Shinjiro Sumi, Hirotada Takahashi, Noriaki Aman, Yoshihiko Terayama, Shuichi Gomi
Patented Case
View Patent ↗
Granted: Jul 2, 2002
Filed: Jan 10, 2001
Inventors
Katsuo Aizawa
Shinjiro Sumi
Hirotada Takahashi
Noriaki Aman
Yoshihiko Terayama
Shuichi Gomi
Assignee (at issue)
MEIJI SEIKA KAISHA, 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.