Granted Patent
Utility
US 5,298,359 · App. 07/693,008
Photosensitive heat-resistant polymer having hydroxyphenyl group for forming a patterned image
Inventors:
Hirotoshi Maeda, Kouichi Kunimune
Patented Case
View Patent ↗
Granted: Mar 29, 1994
Filed: Apr 29, 1991
Inventors
Hirotoshi Maeda
Kouichi Kunimune
Assignee (at issue)
Chisso 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.