Granted Patent
Utility
US 6,758,893 · App. 10/174,691
Granular pigments useful to color concrete
Inventors:
Hugh McAulay, George Podolsky, ANDREW MORRIS, Roy D. Laundon
Patented Case
View Patent ↗
Granted: Jul 6, 2004
Filed: Jun 20, 2002
Inventors
Hugh McAulay
George Podolsky
ANDREW MORRIS
Roy D. Laundon
Assignee (at issue)
Elementis Pigments, 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.