US2895827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic paper base
Assignee: Eastman Kodak Co
•
Filing: 1956-10-24
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Granted: 1959-07-21
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Expires: 1976-10-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Callear
- 👤 Albert S O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:46
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/52; G; G03; G03C; G03C1/00; G03C1/76; G03C1/775
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
PHOTOGRAPHIC PAPER BASE COMPRISING PAPER CONTAINING A WET-STRENGTTH IMPARTING AMINE-FORMALDEHYDE RESIN THEREIN WHICH PAPER HAS THEREON A SIZING LAYER CONTAINING A SUBSTANTIAL PROPORTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA, MELAMINE AND 5,5-DIMETHYL-1,3CYCLOHEXANE DIONE.
Claim 2
Dependent Claim
37 words
PHOTOGRAPHIC PAPER BASE COMPRISING PAPER CONTAINING A WET-STRENGTTH IMPARTING AMINE-FORMALDEHYDE RESIN THEREIN WHICH PAPER HAS THEREON A SIZING LAYER CONTAINING A SUBSTANTIAL PROPORTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA, MELAMINE AND 5,5-DIMETHYL-1,3CYCLOHEXANE DIONE.
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) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |