Patent US462503A successfully refreshed from Google Patents.
Patent US3701664A successfully refreshed from Google Patents.
US3701664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for hardening light-sensitive photographic layers containing gelatine
Assignee: Novartis AG
•
Filing: 1971-05-25
•
Granted: 1972-10-31
•
Expires: 1991-05-25
Abstract
Abstract COLORLESS HALOGENO PYRIMIDINES AND HALOGENO-1,3,5-TRIAZINES CONTAINING NO FREE ACIDIC GROUPS ARE USED FOR HARDENING LIGHT SENSITIVE GELATINE LAYERS.
Inventors
- 👤 Bernhard Piller
- 👤 Karl Seitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/305
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |