Granted Patent
Utility
US 6,071,436 · App. 08/631,490
Corrosion inhibitors for cement compositions
Inventor:
Michael J. Incorvia
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Apr 12, 1996
Inventor
Michael J. Incorvia
Assignee (at issue)
GEO Specialty Chemicals, Inc.
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.