US3232978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of acrylonitrile
Assignee: Toray Industries Inc
•
Filing: 1962-11-30
•
Granted: 1966-02-01
•
Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 Yasuhara Yutaka
- 👤 Miyake Akihisa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:54
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/847; B01J23/8472; B01J27/00; B01J27/14; B01J27/186; B01J27/195; B01J27/198; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF PREPARING ACRYLONITRILE WHICH COMPRISES CATALYTICALLY REACTING PROPYLENE WITH AMMONIA AND MOLECULAR OXYGEN FOR 0.1-100 SECONDS AT A TEMPERATURE OF 350-650*C. AND A PRESSURE OF ATMOSPHERIC TO 50 KG./CM.2, IN THE PRESENCE OF A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF (A) VANDADIUM OXIDE, (B) AN IRON OXIDE SELECTED FROM THE GROUP CONSISTING OF FERRIC AND FERROUS OXIDS, (C) BISMUTH OXIDE, AND (D) BORON OXIDE, ALL IN COMBINATION, SUPPORTED ON A CARRIER.
Claim 2
Independent Claim
72 words
A METHOD OF PREPARING ACRYLONITRILE WHICH COMPRISES CATALYTICALLY REACTING PROPYLENE WITH AMMONIA AND MOLECULAR OXYGEN FOR 0.1-100 SECONDS AT A TEMPERATURE OF 350-650*C. AND A PRESSURE OF ATMOSPHERIC TO 50 KG./CM.2, IN THE PRESENCE OF A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF (A) VANDADIUM OXIDE, (B) AN IRON OXIDE SELECTED FROM THE GROUP CONSISTING OF FERRIC AND FERROUS OXIDS, (C) BISMUTH OXIDE, AND (D) BORON OXIDE, ALL IN COMBINATION, SUPPORTED ON A CARRIER.
References Cited (Backward Citations)
US2481826A
Cited
US3009943A
Cited
US2830026A
Cited
US2805244A
Cited
US2820812A
Cited
US2809987A
Cited
US2938001A
Cited
US3086041A
Cited
FR1255121A
Cited
FR1269382A
Cited
US3135783A
Cited
CA636191A
Cited
CA635328A
Cited
US3142697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |