US2749349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylpyridine-nu-oxides and process of making them
Assignee: Reilly Tar and Chemical Corp
•
Filing: 1956-02-02
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Granted: 1956-06-05
•
Expires: 1976-02-02
Abstract
No abstract record available.
Inventors
- 👤 Francis E Cislak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:08
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89; C08; C08F; C08F20/00; C08F20/02; C08F20/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
VINYLPYRIDINE-N-OXIDES HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
6 words
VINYLPYRIDINE-N-OXIDES HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |