Granted Patent
Utility
US 6,527,983 · App. 08/121,815
Method for inhibiting scale formation
Inventors:
Nevin John Stewart, Patrica Alexandra Mary Walker
Patented Case
View Patent ↗
Granted: Mar 4, 2003
Filed: Sep 15, 1993
Inventors
Nevin John Stewart
Patrica Alexandra Mary Walker
Assignee (at issue)
Solutia Europe N.V./S.A.
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.