Granted Patent
Utility
US 6,494,218 · App. 09/654,539
Method of removing metal sulfates from surfaces
Inventors:
Gene H. Zaid, Beth Ann Wolf
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Sep 1, 2000
Inventors
Gene H. Zaid
Beth Ann Wolf
Assignee (at issue)
JaCam Chemicals, LLC
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.