Patent US2512969A successfully refreshed from Google Patents.
US2512969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing of acrylonitrile polymers using acetate dyes and m-cresol as an assistant
Assignee: EIDP Inc
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Filing: 1947-08-29
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Granted: 1950-06-27
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Expires: 1967-08-29
Abstract
No abstract record available.
Inventors
- 👤 Richards John Cadwallader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:16
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/70; D06P3/72; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65118; Y; Y10; Y10S; Y10S8/00; Y10S8/15; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR DYEING STRUCTURES PREPARED FROM ACRYLONITRILE POLYMERS WHICH COMPRISES TREATING SAID STRUCTURES WITH AN AQUEOUS DYE BATH CONTAINING 1% TO 5% BY WEIGHT OF THE BATH OF META-CRESOL AND A DISPERSED ACETATE DYE.
Claim 2
Dependent Claim
35 words
A PROCESS FOR DYEING STRUCTURES PREPARED FROM ACRYLONITRILE POLYMERS WHICH COMPRISES TREATING SAID STRUCTURES WITH AN AQUEOUS DYE BATH CONTAINING 1% TO 5% BY WEIGHT OF THE BATH OF META-CRESOL AND A DISPERSED ACETATE DYE.
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) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |