US2847447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of acrylonitrile
Assignee: Escambia Chemical Corp
•
Filing: 1956-04-03
•
Granted: 1958-08-12
•
Expires: 1976-04-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Steadman
- 👤 Jr James F Gabbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:05
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN THE PROCESS FOR THE PRODUCTION OF ACRYLONITRILE BY REACTING A MIXTURE OF ACETYLENE AND HYDROGEN CYANIDE IN THE VAPOR PHASE IN THE PRESENCE OF AN INERT CATALYST SUPPORT CARRYING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METAL HYDROXIDES, CYANIDES AND CARBONATES, THE IMPROVEMENT WHICH COMPRISES REACTING SAID MIXTURE IN A REACTOR HAVING A REACTANT-CONTACTING SURFACE CONSISTING ESSENTIALLY OF IRON AND ALUMINUM IN ALLOY FORM.
Claim 2
Dependent Claim
68 words
IN THE PROCESS FOR THE PRODUCTION OF ACRYLONITRILE BY REACTING A MIXTURE OF ACETYLENE AND HYDROGEN CYANIDE IN THE VAPOR PHASE IN THE PRESENCE OF AN INERT CATALYST SUPPORT CARRYING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METAL HYDROXIDES, CYANIDES AND CARBONATES, THE IMPROVEMENT WHICH COMPRISES REACTING SAID MIXTURE IN A REACTOR HAVING A REACTANT-CONTACTING SURFACE CONSISTING ESSENTIALLY OF IRON AND ALUMINUM IN ALLOY FORM.
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US2413623A
Cited
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Cited
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Cited
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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) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |