US2851478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of acrylonitrile
Assignee: Bayer AG
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Filing: 1956-06-20
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Granted: 1958-09-09
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Expires: 1976-06-20
Abstract
No abstract record available.
Inventors
- 👤 Muller Wilhelm
- 👤 Heinen Josef
- 👤 Casper Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:11
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/12; Y; Y10; Y10S; Y10S203/00; Y10S203/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR THE CONTINOUS PRODUCTION OF ACRYLONITRILE FROM ACETYLENE AND HYDROCYANIC ACID IN THE PRESENCE OF ACID CUPROUS CHLORIDE SOLUTIONS AT ELEVATED TEMPERATURE, WHICH COMPRISES REMOVING FROM THE CIRCULATING GAS THE CARBON DIOXIDE GAS WITH AQUEOUS ALKALI AND THE NITROGEN GAS BY WASHING THE CIRCULATING GAS WITH SUCH AN AMOUNT OF WATER THAT THE ACETYLENE IS DISSOLVED IN THE WATER WHILE THE UNDISSOLVED REMAINING NITROGEN GAS IS REMOVED.
Claim 2
Dependent Claim
69 words
A PROCESS FOR THE CONTINOUS PRODUCTION OF ACRYLONITRILE FROM ACETYLENE AND HYDROCYANIC ACID IN THE PRESENCE OF ACID CUPROUS CHLORIDE SOLUTIONS AT ELEVATED TEMPERATURE, WHICH COMPRISES REMOVING FROM THE CIRCULATING GAS THE CARBON DIOXIDE GAS WITH AQUEOUS ALKALI AND THE NITROGEN GAS BY WASHING THE CIRCULATING GAS WITH SUCH AN AMOUNT OF WATER THAT THE ACETYLENE IS DISSOLVED IN THE WATER WHILE THE UNDISSOLVED REMAINING NITROGEN GAS IS REMOVED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |