US2920098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile synthesis
Assignee: EIDP Inc
•
Filing: 1957-01-30
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Granted: 1960-01-05
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Expires: 1977-01-30
Abstract
No abstract record available.
Inventors
- 👤 Harry O Burrus
- 👤 John L Sheard
- 👤 Sterling N Vines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:57
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
THE PROCESS FOR MAKING ACRYLONITRILE COMPRISING PASSING HYDROGEN CYANIDE AND AN EXCESS OF ACETYLENE INTO AN ANHYDROUS CATALYTIC SOLUTION OF CUPROUS CHLORIDE AND AN ORGANIC NITRILE HAVING A BOILING POINT AT ATMOSPHERIC PRESSURE ABOVE ABOUT 100*C., AS THE ESSENTIAL COMPONENT FOR DISSOLVING THE CUPROUS CHLORIDE, SAID SOLUTION BEING MAINTAINED ON THE ACID SIDE AND AT A TEMPERATURE ABOVE THE BOILING POINT OF THE ACRYLONITRILE.
Claim 2
Dependent Claim
64 words
THE PROCESS FOR MAKING ACRYLONITRILE COMPRISING PASSING HYDROGEN CYANIDE AND AN EXCESS OF ACETYLENE INTO AN ANHYDROUS CATALYTIC SOLUTION OF CUPROUS CHLORIDE AND AN ORGANIC NITRILE HAVING A BOILING POINT AT ATMOSPHERIC PRESSURE ABOVE ABOUT 100*C., AS THE ESSENTIAL COMPONENT FOR DISSOLVING THE CUPROUS CHLORIDE, SAID SOLUTION BEING MAINTAINED ON THE ACID SIDE AND AT A TEMPERATURE ABOVE THE BOILING POINT OF THE ACRYLONITRILE.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |