Patent US3265459A successfully refreshed from Google Patents.
US3265459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing textile material with vat and sulfur dyes
Assignee: BASF SE
•
Filing: 1963-11-07
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Granted: 1966-08-09
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Expires: 1983-11-07
Abstract
No abstract record available.
Inventors
- 👤 Schober Erhard
- 👤 Janson Alfons
- 👤 Schlueter Harald
- 👤 Wilhelm Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:26
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/22; D06P1/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR DYEING CELLULOSIC TEXTILE MATERIAL WITH A DYE SELECTED FROM THE CLASS CONSISTING OF VAT DYES AND SULFUR DYES COMPRISING USING AS THE REDUCING AGENT A MIXTURE WHICH CONSISTS OF 20 TO 80% BY WEIGHT OF SODIUM DITHIONITE AND 80 TO 20% BY WEIGHT OF A SULFINIC ACID DERIVATIVE SELECTED FROM THE CLASS CONSISTING OF A COMPOUND OF THE GENERAL FORMULA
Claim 2
Dependent Claim
63 words
A PROCESS FOR DYEING CELLULOSIC TEXTILE MATERIAL WITH A DYE SELECTED FROM THE CLASS CONSISTING OF VAT DYES AND SULFUR DYES COMPRISING USING AS THE REDUCING AGENT A MIXTURE WHICH CONSISTS OF 20 TO 80% BY WEIGHT OF SODIUM DITHIONITE AND 80 TO 20% BY WEIGHT OF A SULFINIC ACID DERIVATIVE SELECTED FROM THE CLASS CONSISTING OF A COMPOUND OF THE 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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |