Granted Patent
Utility
US 4,476,277 · App. 06/452,737
Resin composition containing granular or powdery phenol-aldehyde resin
Inventors:
Hiroaki Koyama, Shigeo Shimizu
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Dec 23, 1982
Inventors
Hiroaki Koyama
Shigeo Shimizu
Assignee (at issue)
KANEBO, LIMITED
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.