Granted Patent
Utility
US 5,583,166 · App. 08/391,264
Process for production of polymer particles
Inventors:
Masaya Okamoto, Noriyuki Kunishi, Yoshinari Koyama
Patented Case
View Patent ↗
Granted: Dec 10, 1996
Filed: Feb 21, 1995
Inventors
Masaya Okamoto
Noriyuki Kunishi
Yoshinari Koyama
Assignee (at issue)
Idemitsu Petrochemical 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.