Patent US2666524A successfully refreshed from Google Patents.
US2666524A
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Process for separating gel particles
Assignee: ExxonMobil Oil Corp
•
Filing: 1952-01-31
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Granted: 1954-01-19
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Expires: 1972-01-31
Abstract
No abstract record available.
Inventors
- 👤 John W Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:03
CPC Classifications
B; B07; B07B; B07B13/00; B07B13/003; B01; B01J; B01J2/00; B01J21/00; Y; Y10; Y10S; Y10S209/00; Y10S209/934
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1155292A
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US1704056A
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Cited
US2304554A
Cited
US2260095A
Cited
US2607482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |