Patent US2904580A successfully refreshed from Google Patents.
US2904580A
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Process for the manufacture of acrylonitrile
Assignee: Standard Oil Co
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Filing: 1957-09-20
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Granted: 1959-09-15
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Expires: 1977-09-20
Abstract
No abstract record available.
Inventors
- 👤 Jr James D Idol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:39
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/31; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; 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
46 words
A PROCESS FOR THE MANUFACTURE OF ACRYLONITRILE COMPRISING THE STEP OF CONTACTING IN THE VAPOR PHASE A MIXTURE OF PROPYLENE, AMMONIA AND OXYGEN WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF THE BISMUTH, TIN, AND ANTIMONY SALTS OF PHOSPHOMOLYBDIC AND MOLYBDIC ACIDS AND BISMUTH PHOSPHOTUNGSTATE.
Claim 2
Dependent Claim
46 words
A PROCESS FOR THE MANUFACTURE OF ACRYLONITRILE COMPRISING THE STEP OF CONTACTING IN THE VAPOR PHASE A MIXTURE OF PROPYLENE, AMMONIA AND OXYGEN WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF THE BISMUTH, TIN, AND ANTIMONY SALTS OF PHOSPHOMOLYBDIC AND MOLYBDIC ACIDS AND BISMUTH PHOSPHOTUNGSTATE.
References Cited (Backward Citations)
US2417893A
Cited
US2481826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |