Granted Patent
Utility
US 6,776,838 · App. 10/087,064
White pozzolan composition and blended cements containing same
Inventors:
Raymond T. Hemmings, Robert D. Nelson, Philip L. Graves, Bruce J. Cornelius
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Mar 1, 2002
Inventors
Raymond T. Hemmings
Robert D. Nelson
Philip L. Graves
Bruce J. Cornelius
Assignee (at issue)
Albacem 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.