Patent US2879266A successfully refreshed from Google Patents.
US2879266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble disazo compounds
Assignee: Honeywell International Inc
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Filing: 1955-11-08
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Granted: 1959-03-24
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Expires: 1975-11-08
Abstract
No abstract record available.
Inventors
- 👤 Norman L Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:18
CPC Classifications
C; C09; C09B; C09B35/00; C09B35/02; C09B35/039; C09B35/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A DISAZOBENZOTHIOPHENE-DIOXIDE FREE FROM WATERSOLUBILIZING SUBSTITUENTS AND HAVING A DIBENZOTHIOPHENEDIOXIDE RADICAL SELECTED FROM THE GROUP CONSISTING OF DIBENZOTHIOPHENE AND ITS LOWER ALKYL SUBSTITUTED DERRIVATIVEES LINKED, THROUGH AN AZO GROUP IN EACH OF THE 3-AND 7-POSITIONS, TO COUPLING COMPONENTS SELECTED FROM THE GROUP CONSISTING OF ACETOACET-ARYLIDES, BENZOYLACET-ARYLIDES AND I-ARYL-5-PYRAZOLONES.
Claim 2
Dependent Claim
48 words
A DISAZOBENZOTHIOPHENE-DIOXIDE FREE FROM WATERSOLUBILIZING SUBSTITUENTS AND HAVING A DIBENZOTHIOPHENEDIOXIDE RADICAL SELECTED FROM THE GROUP CONSISTING OF DIBENZOTHIOPHENE AND ITS LOWER ALKYL SUBSTITUTED DERRIVATIVEES LINKED, THROUGH AN AZO GROUP IN EACH OF THE 3-AND 7-POSITIONS, TO COUPLING COMPONENTS SELECTED FROM THE GROUP CONSISTING OF ACETOACET-ARYLIDES, BENZOYLACET-ARYLIDES AND I-ARYL-5-PYRAZOLONES.
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) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |