US2944871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New colouring process
Assignee: Imperial Chemical Industries Ltd
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Filing: 1958-09-24
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Granted: 1960-07-12
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Expires: 1978-09-24
Abstract
No abstract record available.
Inventors
- 👤 Atkinson John Reginald
- 👤 Johnson Eric Leslie
- 👤 Mills Walter Percival
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:15
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/70; D06P3/708; D06P3/02; D06P3/04; D06P3/24; D06P3/248; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
PROCESS FOR THE COLORATION OF SYNTHETIC POLYMERIC TEXTILE MATERIALS SELECTED FROM THE CLASS CONSISTING OF POLYAMIDE AND MODIFIED POLYACRYLONITRILE TEXTILE MATERIALS WHICH COMPRISES TREATING THE SAID SYNTHETIC POLYMERIC TEXTILE MATERIALS WITH A WATER-NINSOLUBLE AZO DYESTUFF CONTAINING AT LEAST ONE GROUP SELECTED FROM THE CLASS CONSISTING OF W-OXIRANYLALKOXY, W-OXIRANYLALKYLAMINO, N:N-DI(W-OXIRANYLALKYL) AMINO, W-CHLOROALKOXY, W-BROMOALKOXY, W-CHLOROALKYLAMINO, W-BROMOALKYLAMINO, N:N-DI(W-CHLOROALKYL) AMINO, AND N:N-DI-(W-BROMOALKYL) AMINO.
Claim 2
Dependent Claim
59 words
PROCESS FOR THE COLORATION OF SYNTHETIC POLYMERIC TEXTILE MATERIALS SELECTED FROM THE CLASS CONSISTING OF POLYAMIDE AND MODIFIED POLYACRYLONITRILE TEXTILE MATERIALS WHICH COMPRISES TREATING THE SAID SYNTHETIC POLYMERIC TEXTILE MATERIALS WITH A WATER-NINSOLUBLE AZO DYESTUFF CONTAINING AT LEAST ONE GROUP SELECTED FROM THE CLASS CONSISTING OF W-OXIRANYLALKOXY, W-OXIRANYLALKYLAMINO, N:N-DI(W-OXIRANYLALKYL) AMINO, W-CHLOROALKOXY, W-BROMOALKOXY, W-CHLOROALKYLAMINO, W-BROMOALKYLAMINO, N:N-DI(W-CHLOROALKYL) AMINO, AND N:N-DI-(W-BROMOALKYL) AMINO.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |