US3347899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process for the preparation of nitriles
Assignee: Montedison SpA
•
Filing: 1963-09-20
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Granted: 1967-10-17
•
Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
- 👤 Caporali Giorgio
- 👤 Giordano Nicola
- 👤 Ferlazzo Natale
- 👤 Ottaviani Quintino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:07
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/02; B01J27/057; B01J27/0576; B01J23/00; B01J23/16; B01J23/18; B01J23/24; B01J23/26; B01J23/28; B01J23/31; B01J23/32; B01J23/34; B01J23/70; B01J23/74; B01J23/755; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8876; C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; B01J2523/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR CONVERTING PROPYLENE OR ISOBUTYLENE TO ACRYLONITRILE OR METHACRYLONITRILE, RESPECTIVELY, COPRISING CONTACTING A MIXTURE OF SAID PROPYLENE OR ISOBUTYLENE, AMMONIA AND A GAS CONTAINING ELEMENTAL OXYGEN AT A TEMPERATURE IN THE RANGE OF 300*-600*C. AND CONTACT TIME IN THE RANGE OF 0.05-20 SECONDS WITH A CATALYST HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Dependent Claim
57 words
A PROCESS FOR CONVERTING PROPYLENE OR ISOBUTYLENE TO ACRYLONITRILE OR METHACRYLONITRILE, RESPECTIVELY, COPRISING CONTACTING A MIXTURE OF SAID PROPYLENE OR ISOBUTYLENE, AMMONIA AND A GAS CONTAINING ELEMENTAL OXYGEN AT A TEMPERATURE IN THE RANGE OF 300*-600*C. AND CONTACT TIME IN THE RANGE OF 0.05-20 SECONDS WITH A CATALYST HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF:
References Cited (Backward Citations)
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US3164626A
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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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |