Granted Patent
Utility
US 6,503,193 · App. 09/548,676
Flexible tube for endoscope
Inventors:
Tomoko Iwasaki, Kenichi Ohara, Akira Sugiyama, Naoya Ouchi
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Apr 13, 2000
Inventors
Tomoko Iwasaki
Kenichi Ohara
Akira Sugiyama
Naoya Ouchi
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.