Compositions and methods for modifying lumen maintenance characteristics of phosphor-containing coatings
US9269559B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2014 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Sep 16, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/778
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Phosphor-containing coating compositions and methods capable of changing the lumen maintenance characteristics of phosphor-containing coatings and fluorescent lamps that utilize such coatings. Lumen maintenance of a fluorescent lamp can be modified by forming a phosphor-containing coating to contain at least a first phosphor that depreciates during operation of the fluorescent lamp, and forming the phosphor-containing coating to further contain an additive composition in a sufficient amount and sufficiently uniformly distributed in the phosphor-containing coating to inhibit depreciation of the first phosphor during operation of the fluorescent lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.