US2450642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nitriles
Assignee: ExxonMobil Oil Corp
•
Filing: 1946-05-24
•
Granted: 1948-10-05
•
Expires: 1966-05-24
Abstract
No abstract record available.
Inventors
- 👤 William I Denton
- 👤 Richard B Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:55
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/18; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920795A
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US1934838A
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US2331968A
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US2381471A
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US2381470A
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US2381472A
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US2381709A
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US2381473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-05 | 1952-04-05 | 1952-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-05 | 1956-04-05 | 1956-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-05 | 1960-04-05 | 1960-10-05 | $7700.00 | Window Closed / Lapsed |