Granted Patent
Utility
US 5,374,370 · App. 08/012,807
Type B aluminosilicates with low Si:Al ratio for detergent use
Inventors:
Graham T. Brown, Theo Jan Osinga, Michael J. Parkingston, Andrew Thomas Steel
Patented Case
View Patent ↗
Granted: Dec 20, 1994
Filed: Feb 2, 1993
Inventors
Graham T. Brown
Theo Jan Osinga
Michael J. Parkingston
Andrew Thomas Steel
Assignee (at issue)
Unilever Patent Holdings B.V.
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.