US3413309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing nitriles of cycloaliphatic or heterocyclic acids
Assignee: BARBARA J SERAFIN
•
Filing: 1964-02-18
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Granted: 1968-11-26
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Expires: 1984-02-18
Abstract
No abstract record available.
Inventors
- 👤 Mieczyslaw J Makosza
- 👤 Barbara J Serafin
- 👤 Tadeusz L Urbanski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:22
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/30; C07D; C07D307/00; C07D307/02; C07D307/04; C07D307/18; C07D307/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A PROCESS FOR PREPARING SUBSTITUTED CYCLOALIPHATIC OR HETEROCYCLIC ACID NITRILES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
14 words
A PROCESS FOR PREPARING SUBSTITUTED CYCLOALIPHATIC OR HETEROCYCLIC ACID NITRILES OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2242575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |