US3265793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing extruded xerogels containing magnesia particles
Assignee: ChampionX LLC
•
Filing: 1963-08-16
•
Granted: 1966-08-09
•
Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 Robert R Otremba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:53
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS FOR PRODUCING AN EXTRUDED XEROGEL WHICH COMPRISES WETTING A XEROGLEL CONTAINING 5-35% MAGNESIA PARTICLES HAVING A SURFACE AREA OF AT LEAST 100 SQUARE METERS PER GRAM AND A PORE VOLUME OF AT LEAST 0.20 CC.
Claim 2
Dependent Claim
37 words
A PROCESS FOR PRODUCING AN EXTRUDED XEROGEL WHICH COMPRISES WETTING A XEROGLEL CONTAINING 5-35% MAGNESIA PARTICLES HAVING A SURFACE AREA OF AT LEAST 100 SQUARE METERS PER GRAM AND A PORE VOLUME OF AT LEAST 0.20 CC.
References Cited (Backward Citations)
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US2485249A
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US2627089A
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US2517707A
Cited
US2604662A
Cited
US2941961A
Cited
US3010914A
Cited
US3066354A
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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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |