The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2003
Filed:
Apr. 18, 2000
Applicant:
Inventors:
Donald L. Schooley, Grove City, OH (US);
Richard C. Cavestri, Columbus, OH (US);
Don Richard Nemeth, Setmer, FL (US);
Assignee:
Bright Solutions, Inc., Troy, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 3/326 ;
U.S. Cl.
CPC ...
G01N 3/326 ;
Abstract
A test kit for testing acidity of a lubricant in a climate control system containing a naphthalimide dye contains an aqueous solution having a salt and a known amount of hydroxide and an organic solution containing an alcohol and an organic solvent having a flash point of at least 130° F. When a lubricant is added to a combination of the aqueous solution and the organic solution, the color of the bottom layer indicates the acid content of the lubricant.