Granted Patent
Utility
US 5,773,519 · App. 08/814,480
Process for producing modified cross-linked polymer particles
Inventors:
Nobuyuki Ito, Masayuki Hattori, Tohru Masukawa, Satoshi Ishikawa, Minori Kondoh
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Mar 10, 1997
Inventors
Nobuyuki Ito
Masayuki Hattori
Tohru Masukawa
Satoshi Ishikawa
Minori Kondoh
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.