US4596673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photochromic material, its method of manufacture, and products produced therefrom
Assignee: Applied Coatings International Inc
•
Filing: 1983-04-01
•
Granted: 1986-06-24
•
Expires: 2003-04-01
Abstract
Abstract A monomer which would normally be clear and transparent upon polymerization is co-deposited with silver halide particles of extremely small particle size onto transparent glass or plastic by plasma polymerization or glow discharge polymerization. The resultant coated glass or plastic material will exhibit photochromic behavior and may be used in the manufacture of eyeglasses, architectural glass, or glass for automobile windows or windshields.
Inventors
- 👤 Harry A. Beale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:35
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; C03; C03C; C03C17/00; C03C17/28
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
75 words
A photochromic material containing particles of silver halide dispersed in a polymer which would otherwise be clear and transparent said polymer being formed from a monomer selected from the group consisting of hexamethyldisiloxane (HMDO), hexamethyldisilizane (HMDS), vinyl trimethylsilane (VTMS), tetramethyldisiloxane, and vinyl trimethoxysilane, said silver halide particle size ranging from about 25 Å to 150 Å and said silver halide being present from 0.05 percent to 1.5 percent weight of the total coating material present.
Claim 2
Dependent Claim
75 words
A photochromic material containing particles of silver halide dispersed in a polymer which would otherwise be clear and transparent said polymer being formed from a monomer selected from the group consisting of hexamethyldisiloxane (HMDO), hexamethyldisilizane (HMDS), vinyl trimethylsilane (VTMS), tetramethyldisiloxane, and vinyl trimethoxysilane, said silver halide particle size ranging from about 25 Å to 150 Å and said silver halide being present from 0.05 percent to 1.5 percent weight of the total coating material present.
Claim 3
Dependent Claim
13 words
The coating material of claim 1 wherein said silver halide is silver chloride.
References Cited (Backward Citations)
US4049567A
Cited
US4368236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-23 | 1989-12-23 | 1990-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-23 | 1993-12-23 | 1994-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-23 | 1997-12-23 | 1998-06-24 | $7700.00 | Window Closed / Lapsed |