Granted Patent
Utility
US 5,955,552 · App. 09/075,578
Process for producing an oil and water adsorbent polymer capable of entrapping solid particles and liquids and the product thereof
Inventor:
Milan F. Sojka
Patented Case
View Patent ↗
Granted: Sep 21, 1999
Filed: May 11, 1998
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.