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US2486980A
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Catalytic vapor phase hydration of ethylene
Assignee: Phillips Petroleum Co
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Filing: 1946-02-01
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Granted: 1949-11-01
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Expires: 1966-02-01
Abstract
No abstract record available.
Inventors
- 👤 Sam P Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:06
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/03; C07C29/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1602846A
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US1873538A
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US1951740A
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US2050442A
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US2115874A
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US2162913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |