US3340291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated aliphatic nitriles
Assignee: Distillers Co Yeast Ltd
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Filing: 1964-03-31
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Granted: 1967-09-05
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Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 Barclay John Lynn
- 👤 Gasson Edward James
- 👤 Hadley David James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:01
CPC Classifications
B; B01; B01J; B01J21/00; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/843; B01J23/8435; C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE PROCESS FOR THE PRODUCTION OF ACRYLONITRILE OR METHACRYLONITRILE WHICH COMPRISES REACTING AT A TEMPERATURE BETWEEN 300* AND 550*C. IN THE VAPOUR PHASE PROPYLENE FOR THE PRODUCTION OF ACRYLONITRILE OR ISOBUTENE FOR THE PRODUCTION OF METHACRYLONITRILE WITH OXYGEN AND AMMONIA OVER AN OXIDE COMPOSITION WHEREIN THE OXIDE COMPOSITION IS PREPARED BY INTIMATE MIXTURE OF ANTIMONY OXIDE WITH A SECOND MATERIAL CONSISTING ESSENTIALLY OF THE OXIDE OF CHROMIUM, COBALT, COPPER, NICKEL OR TITANIUM AND WHEREIN SAID OXIDE COMPOSITION IS TREATED AT 550*1100*C. IN A MOLECULAR OXYGEN CONTAINING GAS.
Claim 2
Dependent Claim
87 words
THE PROCESS FOR THE PRODUCTION OF ACRYLONITRILE OR METHACRYLONITRILE WHICH COMPRISES REACTING AT A TEMPERATURE BETWEEN 300* AND 550*C. IN THE VAPOUR PHASE PROPYLENE FOR THE PRODUCTION OF ACRYLONITRILE OR ISOBUTENE FOR THE PRODUCTION OF METHACRYLONITRILE WITH OXYGEN AND AMMONIA OVER AN OXIDE COMPOSITION WHEREIN THE OXIDE COMPOSITION IS PREPARED BY INTIMATE MIXTURE OF ANTIMONY OXIDE WITH A SECOND MATERIAL CONSISTING ESSENTIALLY OF THE OXIDE OF CHROMIUM, COBALT, COPPER, NICKEL OR TITANIUM AND WHEREIN SAID OXIDE COMPOSITION IS TREATED AT 550*1100*C. IN A MOLECULAR OXYGEN CONTAINING GAS.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |