US3763159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triazinyl anthraquinone dyes
Assignee: Imperial Chemical Industries Ltd
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Filing: 1971-09-24
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Granted: 1973-10-02
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Expires: 1991-09-24
Abstract
Abstract WATER-SOLUBLE REACTIVE DYES FOR WOOL PREPARED BY THE CONDENSATION OF 1-AMINO-2-SULPHO-4-(AMINOANILINO) ANTHRAQUINONE WITH CYANURIC CHLORIDE (OR SIMILAR TRIAZINE OR PYRIMIDINE COMPOUND) AND A SUBSTITUTED PHENOL OR THIOPHENOL WHEREIN THE SUBSTITUTENT IS A HYDROCARBYL RADICAL (OTHER THEN METHYL) ATTACHED BY DIRECT LINK OR O OR S BRIDGE.
Inventors
- 👤 T Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:07
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/022; C09B62/024
Claims Analysis
Total Claims: 0
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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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |