Granted Patent
Utility
US 5,372,909 · App. 07/948,422
Photosensitive resin composition comprising an alkali-soluble resin made from a phenolic compound and at least 2 different aldehydes
Inventors:
Mineo Nishi, Koji Nakano, Yoshihiro Takada
Patented Case
View Patent ↗
Granted: Dec 13, 1994
Filed: Sep 22, 1992
Inventors
Mineo Nishi
Koji Nakano
Yoshihiro Takada
Assignee (at issue)
Mitsubishi Kasei 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.