US2685607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of olefins from mixed hydrocarbons
Assignee: Texaco Inc
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Filing: 1952-02-21
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Granted: 1954-08-03
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Expires: 1972-02-21
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Pevere
- 👤 George B Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:28
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; B; B01; B01J; B01J23/00; B01J23/38; B01J23/48; B01J23/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF SEPARATING OLEFINS FROM PARAFFINS CONTAINED IN LOW BOILING HYDROCARBON MIXTURES OF PARAFFINS AND OLEFINS THAT COMPRISES CONTACTING SUCH HYDROCARBON MIXTURE WITH SILICA GEL, WHICH HAS BEEN IMPREGNATED WITH SILICA GEL, VER NITRATE SOLUTION AND DRIED AND CALCINED, UNDER A LOW PRESSURE NOT EXCEEDING ABOUT 3 ATMOSPHERES PRESSURE ABSOLUTE TO EFFECT SELECTIVE SORPTION OLEFINS.
Claim 2
Independent Claim
56 words
THE METHOD OF SEPARATING OLEFINS FROM PARAFFINS CONTAINED IN LOW BOILING HYDROCARBON MIXTURES OF PARAFFINS AND OLEFINS THAT COMPRISES CONTACTING SUCH HYDROCARBON MIXTURE WITH SILICA GEL, WHICH HAS BEEN IMPREGNATED WITH SILICA GEL, VER NITRATE SOLUTION AND DRIED AND CALCINED, UNDER A LOW PRESSURE NOT EXCEEDING ABOUT 3 ATMOSPHERES PRESSURE ABSOLUTE TO EFFECT SELECTIVE SORPTION OLEFINS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |