Patent US2467373A successfully refreshed from Google Patents.
US2467373A
Expired / Lapsed
US
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Production of nitriles
Assignee: Phillips Petroleum Co
•
Filing: 1944-09-18
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Granted: 1949-04-19
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Expires: 1964-09-18
Abstract
No abstract record available.
Inventors
- 👤 Harris A Dutcher
- 👤 Wolk I Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:10
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE463123C
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US1851040A
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DE559734C
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GB363009A
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US2097155A
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US2210320A
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US2288580A
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US2385549A
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US2316215A
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US2342101A
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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) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |