Granted Patent
Utility
US 6,286,323 · App. 09/562,573
Air conditioning and refrigeration system using a sulfonate containing calcium salt of dialkyl aromatic sulfonic acid and nonylated phenylamine derivatives in a polar compound
Inventors:
Tony Pio Sgarbi, Teresa Leigh Barr
Patented Case
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Granted: Sep 11, 2001
Filed: May 2, 2000
Inventors
Tony Pio Sgarbi
Teresa Leigh Barr
Assignee (at issue)
Antonio Pio Sgarbi
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.