Granted Patent
Utility
US 5,677,407 · App. 08/486,107
Process for producing an oil sorbent polymer and the product thereof
Inventor:
Milan F. Sojka
Patented Case
View Patent ↗
Granted: Oct 14, 1997
Filed: Jun 7, 1995
Inventor
Milan F. Sojka
Assignee (at issue)
AMCOL INTERNATIONAL 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.