Granted Patent
Utility
US 5,622,684 · App. 08/465,770
Porous inorganic oxide materials prepared by non-ionic surfactant templating route
Inventors:
Thomas J. Pinnavaia, Stephen A. Bagshaw
Patented Case
View Patent ↗
Granted: Apr 22, 1997
Filed: Jun 6, 1995
Inventors
Thomas J. Pinnavaia
Stephen A. Bagshaw
Assignee (at issue)
Board of Trustees Operating Michigan State University
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.