US3478082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of acrylonitrile or methacrylonitrile
Assignee: Lummus Technology LLC
•
Filing: 1965-10-29
•
Granted: 1969-11-11
•
Expires: 1985-10-29
Abstract
No abstract record available.
Inventors
- 👤 Derk Th A Huibers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:09
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/28; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
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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) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |