Blend dyes and method of identifying leaks
US8110401B2 · kind B2 · utility
2Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 2004 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Feb 18, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/13
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A blended dye for use in a coolant. In one embodiment of the invention, the blended dye includes a first water miscible dye adapted to fluoresce when illuminated with a light. The first dye preferably has a wavelength of about 340 nm to about 420 nm. The blended dye also includes a second water miscible dye adapted to fluoresce when illuminated with a light having a wavelength of about 400 nm to about 460 nm. The second dye has a different composition from the first dye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.