Granted Patent
Utility
US 5,744,639 · App. 08/647,959
Granular alkali metal nitrilotriacetate
Inventor:
Sheldon Phillip Verrett
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: Jul 22, 1996
Inventor
Sheldon Phillip Verrett
Assignee (at issue)
Soliton, 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.