US2782869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of silica gels
Assignee: Phillips Petroleum Co
•
Filing: 1951-07-02
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Granted: 1957-02-26
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Expires: 1971-07-02
Abstract
No abstract record available.
Inventors
- 👤 Earl H Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:33
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/16; C01B33/166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR REMOVING A HYDROCARBON FROM A GASEOUS STREAM WHICH COMPRISES PASSING SAID GASEOUS STREAM OVER A GEL-TYPE ADSORBENT WHICH WAS PRECIPITATED IN THE PRESENCE OF THE HYDROCARBON TO BE REMOVED, SAID HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF BENZENE AND SUBSTITUTED BENZENE, SAID SUBSTITUTED BENZENE HAVING AT LEAST ONE ATTACHED ACYCLIC HYDROCARBON RADICAL, THE TOTAL NUMBER OF CARBON ATOMS IN THE SUBSTITUENTS NOT EXCEEDING SIX.
Claim 2
Dependent Claim
67 words
A PROCESS FOR REMOVING A HYDROCARBON FROM A GASEOUS STREAM WHICH COMPRISES PASSING SAID GASEOUS STREAM OVER A GEL-TYPE ADSORBENT WHICH WAS PRECIPITATED IN THE PRESENCE OF THE HYDROCARBON TO BE REMOVED, SAID HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF BENZENE AND SUBSTITUTED BENZENE, SAID SUBSTITUTED BENZENE HAVING AT LEAST ONE ATTACHED ACYCLIC HYDROCARBON RADICAL, THE TOTAL NUMBER OF CARBON ATOMS IN THE SUBSTITUENTS NOT EXCEEDING SIX.
References Cited (Backward Citations)
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Cited
US2137505A
Cited
US2377841A
Cited
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Cited
US2408656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |