Patent US3312554A successfully refreshed from Google Patents.
US3312554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic elements
Assignee: Eastman Kodak Co
•
Filing: 1963-10-24
•
Granted: 1967-04-04
•
Expires: 1983-10-24
Abstract
No abstract record available.
Inventors
- 👤 Wagner Hans Max
- 👤 Maynard Thomas Peter Reginald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:02
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/35; C; C08; C08F; C08F8/00; C08F8/30; C08F8/32; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING THE REACTION PRODUCT OF AN AMINO ACID ESTER SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
27 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING THE REACTION PRODUCT OF AN AMINO ACID ESTER SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2409126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |