US3062679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sized partially esterified paper and its method of preparation
Assignee: Eastman Kodak Co
•
Filing: 1961-02-06
•
Granted: 1962-11-06
•
Expires: 1981-02-06
Abstract
No abstract record available.
Inventors
- 👤 Lloyd E Herdle
- 👤 Gordon C Milligan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:02
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/14; D21H17/15; D21H17/20; D21H17/21; D21H17/24; D21H17/25; D21H17/71; D21H11/00; D21H11/16; D21H11/20; D21H17/33; D21H17/34; D21H17/36; D21H17/46; D21H17/54; D21H17/55; D21H17/63; D21H17/66; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
PAPER, 3-50% OF THE HYDROXYL OF THE CELLULOSE FIBERS OF WHICH HAS BEEN REPLACED BY LOWER FATTY ACID RADICALS, WHICH PAPER HAS A POLYVINYL ACETATE SURFACE SIZING WHICH CONTAINS HYDROXYETHYL CELLULOSE, PLASTICIZER AND WATERSOLUBLE WENER TYPE CHROMIUM COMPLEX IN WHICH A TRIVALENT NUCLEAR CHROMIUM ATOM IS CO-ORDINATED WITH AN ACYCLIC CARBOXYLIC ACID GROUP HAVING AT LEAST 10 CARBON ATOMS, AND A COPATING THEREON OF BARIUM SULFATE AND GELATIN.
References Cited (Backward Citations)
US2925340A
Cited
US2887429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |