US2607769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diphenyl disazo dyes containing deaminated amine coupling components
Assignee: GAF Chemicals Corp
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Filing: 1948-10-07
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Granted: 1952-08-19
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Expires: 1968-10-07
Abstract
No abstract record available.
Inventors
- 👤 William H Armento
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:16
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
THE DISAZO DYE HAVING THE FORMULA:
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |