Granted Patent
Utility
US 6,162,580 · App. 08/451,616
Photosensitive polyimide precursor compositions processable by exposure to short wavelength light
Inventors:
Yoshio Matsuoka, Kanichi Yokota, Yasuhiro Kataoka
Patented Case
View Patent ↗
Granted: Dec 19, 2000
Filed: May 26, 1995
Inventors
Yoshio Matsuoka
Kanichi Yokota
Yasuhiro Kataoka
Assignee (at issue)
ASAHI KASEI KOGYO CO., 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.