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:
Dec. 26, 2000
Filed:
Aug. 20, 1998
B William Cooper, Lloyd Harbor, NY (US);
John T Duerr, Massapequa Park, NY (US);
Spectronics Corporation, Westburg, NY (US);
Abstract
A fluorescent dye composition for inclusion in a fluid for leak detection applications is provided which is responsive to a broad range of UVA, blue, and UVA-blue light sources. The composition comprises a mixture of a perylene dye, a naphthalimide dye, and a hydrocarbon-based fluid, wherein the combination of the perylene dye, the naphthalimide dye and the hydrocarbon-based fluid are miscible in the fluid. A fluorescent dye composition is also provided that is effective for all automotive working fluids, including heavy lubricants and transmission fluids, synthetic lubricants and internal combustion oils, refrigerants, liquid and gaseous fuels, and hydraulic fluids. A fluorescent dye composition is also provided containing only a combination of perylene dye and naphthalimide dye.