US2953420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the dyeing of articles of polyacrylonitrile
Assignee: Bayer AG
•
Filing: 1958-02-12
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Granted: 1960-09-20
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Expires: 1978-02-12
Abstract
No abstract record available.
Inventors
- 👤 Hees Walter
- 👤 Quaedvlieg Mathieu
- 👤 Ruhlig Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:40
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/655; D06P1/66; D06P1/64; D06P1/642; D06P1/649; D06P1/6495; D06P1/6497; D06P3/00; D06P3/70; D06P3/76; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S260/20; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS FOR THE DYEING OF ARTICLES OF POLYACRYLONITILE WITH A MEMBER OF THE GROUP CONSISTING OF BASIC DYESTUFFS AND DISPERSED DYESTUFFS WHICH COMPRISES CARRYING OUT THE DYEING IN THE PRESENCE OF A MEMBER OF THE GROUP CONSISTING OF AMIDOAMNES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
44 words
A PROCESS FOR THE DYEING OF ARTICLES OF POLYACRYLONITILE WITH A MEMBER OF THE GROUP CONSISTING OF BASIC DYESTUFFS AND DISPERSED DYESTUFFS WHICH COMPRISES CARRYING OUT THE DYEING IN THE PRESENCE OF A MEMBER OF THE GROUP CONSISTING OF AMIDOAMNES OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2699436A
Cited
US2836517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |