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US2770643A
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Synthesis of aliphatic nitriles by pyrolysis and thermal cleavage of hydrazones, ketazines, ketimines and ketoximes
Assignee: EIDP Inc
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Filing: 1953-11-05
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Granted: 1956-11-13
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Expires: 1973-11-05
Abstract
No abstract record available.
Inventors
- 👤 John L Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:57
CPC Classifications
C; C07; C07C; C07C253/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
PROCESS FOR OBTAINING ALIPHATIC NUTRILES WHICH COMPRISES PHROLYZING AND THERMALLY CLEAVING IN THE ABSENCE OF A CATHALYST AT A TEMPERATURE WITHIN THE RANGE OF 400 TO 1000* C. A COMPOUND OF THE GENERAL FORMULA
Claim 2
Dependent Claim
34 words
PROCESS FOR OBTAINING ALIPHATIC NUTRILES WHICH COMPRISES PHROLYZING AND THERMALLY CLEAVING IN THE ABSENCE OF A CATHALYST AT A TEMPERATURE WITHIN THE RANGE OF 400 TO 1000* C. A COMPOUND OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2404280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |