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US2666758A
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Azo compounds having alkoxy and cyano groups
Assignee: EIDP Inc
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Filing: 1949-05-26
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Granted: 1954-01-19
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Expires: 1969-05-26
Abstract
No abstract record available.
Inventors
- 👤 Johnson John Raven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:08
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/63; C07C255/65; C08; C08F; C08F4/00; C08F4/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
7 words
AN ACYCLIC AZO COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2492763A
Cited
US2471959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |