US2900216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the dyeing of polymers of acrylonitrile or asymmetric dicyanoethylene
Assignee: Bayer AG
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Filing: 1956-05-22
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Granted: 1959-08-18
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Expires: 1976-05-22
Abstract
No abstract record available.
Inventors
- 👤 Schwechten Heinz Werner
- 👤 Singer Josef
- 👤 Bayer Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:26
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/002; C09B1/16; C09B1/20; C09B1/207; C09B1/26; C09B1/32; C09B1/325; C09B1/36; C09B1/40; C09B1/50; C09B1/51; C09B1/514; C09B5/00; C09B5/24; C09B5/44; C09B5/60; C09B62/00; C09B62/44; C09B62/78; C09B62/80; C09B69/00; D; D06; D06P; D06P3/00; D06P3/70; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A PROCESS FOR THE DYEING OF A POLYMER BASED ON A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, ASYMMETRICAL DICYANOETHYLENE AND COPOLYMERS THEREOF IN AN ACID DYE BATH WHICH COMPRISES USING AS DYESUFF STUFF A BASIC PHENYLAMINOANTHRAQUINONE WHICH IS SUBSTITUTED IN THE PHENYL NUCLEUS BY A RADICAL HAVING THE FORMULA
Claim 2
Dependent Claim
51 words
A PROCESS FOR THE DYEING OF A POLYMER BASED ON A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, ASYMMETRICAL DICYANOETHYLENE AND COPOLYMERS THEREOF IN AN ACID DYE BATH WHICH COMPRISES USING AS DYESUFF STUFF A BASIC PHENYLAMINOANTHRAQUINONE WHICH IS SUBSTITUTED IN THE PHENYL NUCLEUS BY A RADICAL HAVING THE 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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |