US2803642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aliphatic nitriles
Assignee: Pure Oil Co
•
Filing: 1955-12-28
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Granted: 1957-08-20
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Expires: 1975-12-28
Abstract
No abstract record available.
Inventors
- 👤 William L Fierce
- 👤 Walter J Sandner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:15
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/32; C07C253/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
THE PROCESS FOR THE PREPARATION OF ALIPHATIC NITRILES WHICH COMPRISES THE STEP OF HEATING A MIXTURE OF CYANOGEN AND HYDROCARBON GAS CONTAINING A SUBSTANTIAL AMOUNT OF MONOOLEFIN TO A TEMPERATURE ABOVE 700*C.
Claim 2
Dependent Claim
32 words
THE PROCESS FOR THE PREPARATION OF ALIPHATIC NITRILES WHICH COMPRISES THE STEP OF HEATING A MIXTURE OF CYANOGEN AND HYDROCARBON GAS CONTAINING A SUBSTANTIAL AMOUNT OF MONOOLEFIN TO A TEMPERATURE ABOVE 700*C.
References Cited (Backward Citations)
US2745864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |