Granted Patent
Utility
US 5,705,721 · App. 08/743,016
Dispersant for chloroprene unit fouling
Inventor:
Natu R. Patel
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Nov 1, 1996
Inventor
Natu R. Patel
Assignee (at issue)
Nalco Chemical Company
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.