US3291610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element
Assignee: Eastman Kodak Co
•
Filing: 1963-05-31
•
Granted: 1966-12-13
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Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Thomas I Abbott
- 👤 Hugo F Huedepohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:44
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/805
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
A COMPOSITE PHOTOGRAPHIC STRIPPING ELEMENT HAVING A FIRST LAYER COMPRISING ONE PART BY WEIGHT ETHYL CELLULOSE AND 0.25-0.50 PART BY WEIGHT GELATIN, AND A SECOND LAYER COMPRISING ONE PART BY WEIGHT ETHYL CELLULOSE AND 1.5 TO 2.5 PARTS BY WEIGHT GELATIN.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |