Patent US3100769A successfully refreshed from Google Patents.
US3100769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disazo dyes
Assignee: ACNA Chimica Organica SpA
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Filing: 1960-04-14
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Granted: 1963-08-13
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Expires: 1980-04-14
Abstract
No abstract record available.
Inventors
- 👤 Gaetani Ermanno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:16
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; C09B31/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A DISAZO DYE, INSOLUBE IN WATER SELECTED FROM THE GROUP CONSISTING OF DYES OF THE FORMULAE:
Claim 2
Dependent Claim
16 words
A DISAZO DYE, INSOLUBE IN WATER SELECTED FROM THE GROUP CONSISTING OF DYES OF THE FORMULAE:
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) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |