Patent US2566244A successfully refreshed from Google Patents.
US2566244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene/vinyl alcohol/acrylic acid copolymers, their ammonium salts, and paper coated therewith
Assignee: EIDP Inc
•
Filing: 1949-11-10
•
Granted: 1951-08-28
•
Expires: 1969-11-10
Abstract
No abstract record available.
Inventors
- 👤 Paul S Pinkney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:56
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C08F8/00; C08F8/44; C08F210/00; C08F210/02; C08F2810/00; C08F2810/50; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
PAPER CONTAINING A COATING COMPRISING A PIGMENT BINDER CONSISTING OF THE AMMONIUM SALT OF AN ETHYLENE/VINYL ALCOHOL/ACRYLIC ACID COPOLYMER WHICH HAS A MOLECULAR WEIGHT OF AT LEAST 50,000 AND CONTAINS BY WEIGHT IN COMBINED FORM FROM 25% TO 60% ETHYLENE, FROM 10% TO 30% VINYL ALCOHOL, AND FROM 25% TO 60% ACRYLIC ACID
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) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |