Granted Patent
Utility
US 6,004,475 · App. 08/876,126
Corrosion inhibiting solutions for refrigeration systems comprising heteropoly complex anions of transition metal elements
Inventors:
Shyam Kumar Verma, Manuel Sarkis Mekhjian, George Robert Sandor, Philip John Boon, Yurii I. Kuznetsov, Sergey V. Oleinik
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: Jun 23, 1997
Inventors
Shyam Kumar Verma
Manuel Sarkis Mekhjian
George Robert Sandor
Philip John Boon
Yurii I. Kuznetsov
Sergey V. Oleinik
Assignee (at issue)
FMC CORPORATION
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.