US2628965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of olefin oxides
Assignee: GAF Chemicals Corp
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Filing: 1946-08-20
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Granted: 1953-02-17
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Expires: 1966-08-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick W Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:23
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; C; C07; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/08; C07D301/10; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00115; B01J2208/00123; B01J2208/00265; B01J2208/00274; B01J2208/0053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE METHOD OF RECOVERING THE OLEFINIC VALUES OF VAPORIZED HYDROCARBON MIXTURES CONTAINING NOT LESS THAN ABOUT 50% BY VOLUME OF OLEFINS AND NOT LESS THAN ABOUT 5% OF UNSTABLE IMPURITIES OF THE CLASS OF CARBON MONOXIDE AND ACETYLANIC COMPOUNDS, BASE ON THE OLEFIN CONTENT, WHICH CO MPRISES PASSING A SAID VAPORIZED HYDROCARBON MIXTURE AND OXYGEN THROUGH A FLUIDIZED MASS OF COM MINUTED SILVER OXYGENATION CATALYST, PROPORTIONING SAID VAPORIZED HYDROCARBON MIXTURE AND OXYGEN SO THAT THE STOICHIOMETRIC REQUIREMENT OF OXYGEN TO CONVERT SAID UNSTABLE IMPURITIES TO CARBON DIOXIDE AND WATER IS SATISFIED AND THERE IS PRESENT ABOUT 0.4 TO 1.0 VOLUME OF OXYGEN FOR EACH VOLUME OF CONTAINED OLEFIN, MAINTAINING SAID FLUIDIZED MASS AT A REACTION TEMPARATURE IN THE RANGE OF ABOUT 200* TO 300* C., SEPARATING THE REACTION GASES FROM SAID FLUIDIZED MASS, AND RE-
Claim 2
Independent Claim
135 words
THE METHOD OF RECOVERING THE OLEFINIC VALUES OF VAPORIZED HYDROCARBON MIXTURES CONTAINING NOT LESS THAN ABOUT 50% BY VOLUME OF OLEFINS AND NOT LESS THAN ABOUT 5% OF UNSTABLE IMPURITIES OF THE CLASS OF CARBON MONOXIDE AND ACETYLANIC COMPOUNDS, BASE ON THE OLEFIN CONTENT, WHICH CO MPRISES PASSING A SAID VAPORIZED HYDROCARBON MIXTURE AND OXYGEN THROUGH A FLUIDIZED MASS OF COM MINUTED SILVER OXYGENATION CATALYST, PROPORTIONING SAID VAPORIZED HYDROCARBON MIXTURE AND OXYGEN SO THAT THE STOICHIOMETRIC REQUIREMENT OF OXYGEN TO CONVERT SAID UNSTABLE IMPURITIES TO CARBON DIOXIDE AND WATER IS SATISFIED AND THERE IS PRESENT ABOUT 0.4 TO 1.0 VOLUME OF OXYGEN FOR EACH VOLUME OF CONTAINED OLEFIN, MAINTAINING SAID FLUIDIZED MASS AT A REACTION TEMPARATURE IN THE RANGE OF ABOUT 200* TO 300* C., SEPARATING THE REACTION GASES FROM SAID FLUIDIZED MASS, AND RE-
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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) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |