Granted Patent
Utility
US 5,490,949 · App. 08/399,804
Block detergent containing nitrilotriacetic acid
Inventors:
Thomas W. Backes, Sean D. Dingman, Sheldon P. Verrett
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Mar 7, 1995
Inventors
Thomas W. Backes
Sean D. Dingman
Sheldon P. Verrett
Assignee (at issue)
Monsanto Company
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.