Photochromic coated high impact resistant articles
US6733887B2 · kind B2 · utility
40Cited by
51References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2002 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Oct 18, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31598
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Described is an article of a non-elastomeric poly(urea-urethane) substrate having free isocyanato surface groups and at least a partial coating of a photochromic polymeric coating on at least one surface of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.