Granted Patent
Utility
US 6,284,867 · App. 09/592,231
Highly efficient cement dispersants
Inventors:
Thomas M. Vickers, Jr., Runhai Lu, Lynn E. Brower, Samy M. Shendy, Rainer Packe-Wirth, Hong P. Gao
Patented Case
View Patent ↗
Granted: Sep 4, 2001
Filed: Jun 12, 2000
Inventors
Thomas M. Vickers, Jr.
Runhai Lu
Lynn E. Brower
Samy M. Shendy
Rainer Packe-Wirth
Hong P. Gao
Assignee (at issue)
MBT Holding AG
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.