US3690886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Print-out process utilizing chemically sensitized lead salt in organophilic binder
Assignee: Agfa Gevaert NV
•
Filing: 1969-11-12
•
Granted: 1972-09-12
•
Expires: 1989-11-12
Abstract
Abstract A PRINT-OUT RECORDING METHOD AND MATERIAL USING A RECORDING LAYER COMPRISING A PHOTOSENSITIVE LEAD HALIDE SALT DISPERSED IN AN ORGANOPHILIC BINDER. PREFERRED LEAD SALTS ARE LEAD IODIDE, LEAD BROMIDE, OR A CRYSTALLINE MIXTURE THEREOF. A SENSITIZING AGENT MAY BE ADDED TO INCREASE THE PHOTOSENSITIVITY OF THE LEAD SALT. FAINT PRINT-OUT IMAGES MAY BE INTENSIFIED BY TREATMENT WITH A PHYSICAL DEVELOPMENT USING, FOR INSTANCE, A SOLUTION CONTAINING A REDUCING AGENT AND METAL IONS OF A METAL MORE ELECTROPOSITIVE THAN LEAD.
Inventors
- 👤 Walter August Van Den Heuvel
- 👤 Johan Eugeen Vanhalst
- 👤 Eric Maria Brinckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:22
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/725; G03C1/7253; G03C1/705
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |