US2723914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive materials
Assignee: Individual
•
Filing: 1954-05-24
•
Granted: 1955-11-15
•
Expires: 1974-05-24
Abstract
No abstract record available.
Inventors
- 👤 Suchow Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:01
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A METHOD OF PRODUCING A NEW PHOTOSENSITIVE MATERIAL COMPRISING HEATING IN THE SOLID STATE AN INTIMATE MIXTURE OF FINELY GROUND SILVER SULFIDE AND MERCURIC IODIDE UNTIL A PHOTOSENSITIVE AND PHOTOTROPIC MATERIAL HAS BEEN OBTAINED THAT WILL TURN BROWN TO BLACK IN SUNLIGHT.
Claim 2
Independent Claim
42 words
A METHOD OF PRODUCING A NEW PHOTOSENSITIVE MATERIAL COMPRISING HEATING IN THE SOLID STATE AN INTIMATE MIXTURE OF FINELY GROUND SILVER SULFIDE AND MERCURIC IODIDE UNTIL A PHOTOSENSITIVE AND PHOTOTROPIC MATERIAL HAS BEEN OBTAINED THAT WILL TURN BROWN TO BLACK IN SUNLIGHT.
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) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |