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:
Jun. 06, 2000
Filed:
Mar. 26, 1997
Applicant:
Inventor:
Richard C Cavestri, Columbus, OH (US);
Assignee:
Bright Solutions, Inc., Troy, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73 407 ; 8528 ; 250302 ; 252 68 ; 25230116 ; 252964 ;
Abstract
A leak detecting dye for use in heating, ventilating, air conditioning, or refrigeration systems employing a dye powder form of dyes such as naphthalimide, perylene, coumarin, and thioxanthane. The dye is formulated into a useful liquid or paste mixture by mixing the dye powder (or dye in granular or crystalline form) with a solvent, a lubricant, or a refrigerant. In liquid or paste form, it is suitable for introduction into the system.