Patent US2795477A successfully refreshed from Google Patents.
US2795477A
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Coloration of fibres having a polyvinyl derivative base
Assignee: Compagnie Francaise des Matieres Colorantes SARL
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Filing: 1954-06-21
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Granted: 1957-06-11
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Ratchewski Rachel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/28; Y; Y10; Y10S; Y10S8/00; Y10S8/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
PROCESS FOR THE COLOURATION OF POLYMERISED VINYL CHLORIDE TEXTILE FIBRES WHICH COMPRISES APPLYING THERETO AT LEAST THE ANTHRAQUINONE DYESTUFF OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
23 words
PROCESS FOR THE COLOURATION OF POLYMERISED VINYL CHLORIDE TEXTILE FIBRES WHICH COMPRISES APPLYING THERETO AT LEAST THE ANTHRAQUINONE DYESTUFF OF THE FOLLOWING 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) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |