US2783121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation dyeing with aniline-4-sulfamic acid
Assignee: Compagnie Francaise des Matieres Colorantes SARL
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Filing: 1952-11-24
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Granted: 1957-02-26
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Expires: 1972-11-24
Abstract
No abstract record available.
Inventors
- 👤 Lantz Robert Lazare
- 👤 Obellianne Pierre Marie Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:15
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/32; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
PROCESS FOR THE PEPARATION OF COLOURING MATTERS ON FIBRES BY THE OXIDATION, WITH AN OXIDISING AGENT, OF A SALT OF A SULPHAMIC ACID OF A BENZENE DIAMINE OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
31 words
PROCESS FOR THE PEPARATION OF COLOURING MATTERS ON FIBRES BY THE OXIDATION, WITH AN OXIDISING AGENT, OF A SALT OF A SULPHAMIC ACID OF A BENZENE DIAMINE 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) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |