US3471545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process for the preparation of acrylonitrile or methacrylonitrile
Assignee: Montedison SpA
•
Filing: 1966-12-19
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Granted: 1969-10-07
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Expires: 1986-12-19
Abstract
No abstract record available.
Inventors
- 👤 Nicola Giordano
- 👤 Enrico Cavaterra
- 👤 Vittorio Fattore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:49
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; B; B01; B01J; B01J35/00; B01J35/60; B01J35/61; B01J35/615; B01J35/617; B01J35/63; B01J35/638; B01J35/64; B01J35/647; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3256311A
Cited
FR1288403A
Cited
US3226421A
Cited
US3231600A
Cited
US3278573A
Cited
US3370083A
Cited
US3347899A
Cited
US3243385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |