US3114754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo, anthraquinone, nitro, and phthalocyanine dyestuffs having beta-acyloxyethyl sulphonyl or an nu-(beta-acyloxyethyl) sulfamyl radical
Assignee: Imperial Chemical Industries Ltd
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Filing: 1960-10-03
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Granted: 1963-12-17
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Expires: 1980-10-03
Abstract
No abstract record available.
Inventors
- 👤 Lodge Frank
- 👤 Vellins Cyril Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:44
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/503; C09B62/507; C09B62/513; C09B62/505; C09B62/517
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
WATER-SOLUBLE DYESTUFFS OF THE FORMULA:
Claim 2
Dependent Claim
5 words
WATER-SOLUBLE DYESTUFFS OF THE FORMULA:
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |