US3220848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic elements containing hardening agents having ethyleneimino groups
Assignee: Agfa Gevaert NV
•
Filing: 1963-09-30
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Granted: 1965-11-30
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Himmelmann Wolfgang
- 👤 Gauss Walter
- 👤 Meckl Heinz
- 👤 Ulrich Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:01
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/302
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PHOTOGRAPHIC ELEMENT CARRYING ON A SUITABLE SUPPORT A LAYER CONTAINING GELATIN AS THE COLLOIDAL CARRIER MATERIAL AND CONTAINING IN A HARDENING AMOUNT A GELATIN HARDENING AGENT OF THE FORMULA:
Claim 2
Dependent Claim
30 words
A PHOTOGRAPHIC ELEMENT CARRYING ON A SUITABLE SUPPORT A LAYER CONTAINING GELATIN AS THE COLLOIDAL CARRIER MATERIAL AND CONTAINING IN A HARDENING AMOUNT A GELATIN HARDENING AGENT OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |