Patent US2432532A successfully refreshed from Google Patents.
US2432532A
Expired / Lapsed
US
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Production of acetonitrile
Assignee: Phillips Petroleum Co
•
Filing: 1945-04-20
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Granted: 1947-12-16
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Expires: 1965-04-20
Abstract
No abstract record available.
Inventors
- 👤 John E Mahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:06
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920795A
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US1934838A
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US1957749A
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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) | 1950-12-15 | 1951-06-16 | 1951-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-15 | 1955-06-16 | 1955-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-15 | 1959-06-16 | 1959-12-16 | $7700.00 | Window Closed / Lapsed |