US2748029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tub sizing of paper
Assignee: Eastman Kodak Co
•
Filing: 1953-04-27
•
Granted: 1956-05-29
•
Expires: 1973-04-27
Abstract
No abstract record available.
Inventors
- 👤 Donald R Spear
- 👤 Jr William F Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:32
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/37; G; G03; G03C; G03C1/00; G03C1/76; G03C1/775
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS FOR TUB SIZING PHOTOGRAPHIC PAPER WHEREIN THE PAPER IS SIZED BY HYDROSOL PREPARED BY POLYMERIZING TOGETHER IN AN AQUEOUS SYSTEM AND UNSATURATED ALIPHATIC AMIDE HAVING THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
31 words
A PROCESS FOR TUB SIZING PHOTOGRAPHIC PAPER WHEREIN THE PAPER IS SIZED BY HYDROSOL PREPARED BY POLYMERIZING TOGETHER IN AN AQUEOUS SYSTEM AND UNSATURATED ALIPHATIC AMIDE HAVING THE FOLLOWING STRUCTURAL 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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |