US2858331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of chemicals from olefins with aid of a perfluoroacid
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-10-21
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Granted: 1958-10-28
•
Expires: 1973-10-21
Abstract
No abstract record available.
Inventors
- 👤 Merrell R Fenske
- 👤 Jennings H Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/128; C07C23/00; C07C23/02; C07C23/10; C07C29/09; C07C29/095; C07C67/00; C07C67/04; C07C2601/00; C07C2601/06; C07C2601/08; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1939384A
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US2567011A
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US2634290A
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US2759912A
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US2775633A
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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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |