US2863860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New monoazo compounds
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1956-06-26
•
Granted: 1958-12-09
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Expires: 1976-06-26
Abstract
No abstract record available.
Inventors
- 👤 Mitchell John
- 👤 Twitchett Harry James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:23
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A MONOAZO COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
13 words
A MONOAZO COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA
References Cited (Backward Citations)
US818981A
Cited
US2734895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |