Granted Patent
Utility
US 4,595,394 · App. 06/595,792
Agent for improving processability of cellulose fibers: acid polymer salts for improved scouring
Inventors:
Masakatsu Okamoto, Shigeru Nagao, Kazuhisa Yagi
Patented Case
View Patent ↗
Granted: Jun 17, 1986
Filed: Apr 2, 1984
Inventors
Masakatsu Okamoto
Shigeru Nagao
Kazuhisa Yagi
Assignee (at issue)
Kao 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.