US2890222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternized nicotinium derivatives
Assignee: Ohio State University Research Foundation
•
Filing: 1958-03-14
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Granted: 1959-06-09
•
Expires: 1978-03-14
Abstract
No abstract record available.
Inventors
- 👤 George M Omietanski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:43
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
NEW CHEMICAL COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
7 words
NEW CHEMICAL COMPOUNDS HAVING THE 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) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |