Patent US3012843A successfully refreshed from Google Patents.
US3012843A
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Process for the coloration of linear polyester fibres with new azo dyestuffs
Assignee: Compagnie Francaise des Matieres Colorantes SARL
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Filing: 1958-06-26
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Granted: 1961-12-12
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Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 Gangneux Rene Eugene Marcel
- 👤 Blane Jacques Jules Jean Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:38
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/52; D06P3/54; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
PROCESS FOR THE COLORATION OF LINEAR POLYESTER FIBRES WHICH COMPRISES DYEING THE FIBRES WITH AN AZO DYESTUFF ON THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
22 words
PROCESS FOR THE COLORATION OF LINEAR POLYESTER FIBRES WHICH COMPRISES DYEING THE FIBRES WITH AN AZO DYESTUFF ON THE FOLLOWING GENERAL 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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |