Method and apparatus for identifying photocatalytic coatings
US7679063B2 · kind B2 · utility
5Cited by
45References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2006 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Aug 10, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8427
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of and apparatus for identifying the presence of thin photocatalytic (PCAT) coatings on glass surfaces. An apparatus is disclosed that can determine whether a PCAT coating (which may comprise titanium dioxide, for example) having a thickness of less than about 100 Å is present on the surface of a substrate such as glass. The apparatus may measure the reflectance of electromagnetic energy (such as light energy) at the surface of a substrate using energy at selected wavelengths or wavelength ranges. The apparatus may determine reflectance values for PCAT coated surfaces of any thickness, as well as for uncoated surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.