Patent US2567593A successfully refreshed from Google Patents.
Patent US2470136A successfully refreshed from Google Patents.
Patent US2809066A successfully refreshed from Google Patents.
Patent US3730734A successfully refreshed from Google Patents.
US3730734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive photopolymerizable material containing photochromic material
Assignee: Agfa Gevaert NV
•
Filing: 1968-03-12
•
Granted: 1973-05-01
•
Expires: 1988-03-12
Abstract
Abstract LIGHT SENSITIVE PHOTOGRAPHIC MATERIALS ARE PROVIDED COMPRISING A LIGHT SENSITIVE LAYER COMPRISING A PHOTOCHROMIC MATERIAL AND A PHOTO-HARDENING POLYMERIC SYSTEM. NORMALLY, PHOTOCHROMIC MATERIALS UNDERGO REVERSIBLE COLOR CHANGE. IN THE DISCLOSED MATERIALS, THE COLOR FORMED UPON EXPOSURE TO ACTINIC LIGHT IS PRESERVED FORMING A NON-FADING IMAGE.
Inventors
- 👤 G Delzenne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:57
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/09; G03F7/105; C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6856; C09; C09D; C09D167/00; C09D167/02; G03C; G03C1/00; G03C1/685; G03C1/72; G03C1/73; G03C1/733
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |