Granted Patent
Utility
US 4,694,035 · App. 06/823,013
Process for preparing large-sized polymer particles
Inventors:
Kiyoshi Kasai, Masayuki Hattori, Osamu Kikuchi, Hiromi Takeuchi, Haruhiro Hirai, Nobuo Sakurai
Patented Case
View Patent ↗
Granted: Sep 15, 1987
Filed: Jan 27, 1986
Inventors
Kiyoshi Kasai
Masayuki Hattori
Osamu Kikuchi
Hiromi Takeuchi
Haruhiro Hirai
Nobuo Sakurai
Assignee (at issue)
Japan Synthetic Rubber 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.