Granted Patent
Utility
US 6,717,092 · App. 09/923,357
Method of manufacturing treatment instrument of endoscope
Inventors:
Yoshihiro Obata, Kikuo Iwasaka, Shinichi Matsuno, Hajime Yoshino, Akira Sugiyama, Hidehito Kurosawa, Shigeru Ogawa, Hideo Nanba
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Aug 8, 2001
Inventors
Yoshihiro Obata
Kikuo Iwasaka
Shinichi Matsuno
Hajime Yoshino
Akira Sugiyama
Hidehito Kurosawa
Shigeru Ogawa
Hideo Nanba
Assignee (at issue)
Pentax Corporation
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.