US3249597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mono azo dyes containing a pyridine-1-nu-oxide
Assignee: Interchemical Corp
•
Filing: 1963-07-29
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Granted: 1966-05-03
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph W Dehn
- 👤 Anthony J Salina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:16
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/75; C07D213/89
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
THE COMPOUND
Claim 2
Dependent Claim
2 words
THE COMPOUND
References Cited (Backward Citations)
US3051997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |