Granted Patent
Utility
US 6,464,995 · App. 09/553,538
Treated horticultural substrates
Inventors:
Dennis G. Sekutowski, Gary J. Puterka, David Michael Glenn
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Apr 20, 2000
Inventors
Dennis G. Sekutowski
Gary J. Puterka
David Michael Glenn
Assignees (at issue)
Engelhard Corporation
The United States of America, as represented by the Secretary of Agriculture
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.