US3290406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dehydrogenation
Assignee: Engelhard Industries Inc
•
Filing: 1965-06-02
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Granted: 1966-12-06
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Expires: 1985-06-02
Abstract
No abstract record available.
Inventors
- 👤 William C Pfefferle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:42
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; B; B01; B01D; B01D53/00; B01D53/22; B01J; B01J8/00; B01J8/008; B01J8/02; C01B3/02; C01B3/04; C01B3/047; C01B3/32; C01B3/34; C01B3/38; C01B3/501; C07; C07C; C07C5/00; C07C5/32; C07C5/327; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00097; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/041; C01B2203/0465; C01B2203/048; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/954
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN A PROCESS FOR THE DEHYDROGENATION OF DEHYDROGENATABLE HYDROCARBONS IS A REACTOR MAINTAINED UNDER DEHYDROGENATION CONDITIONS WHICH PRECLUDE ANY SUBSTANTIAL THERMAL CRACKING OF THE HYDROCARBONS INCLUDING A TEMPERATURE OF ABOUT 800 TO 1300*F. AND A PRESSURE IN THE RANGE OF 0.05 TO 200 P.S.I.G., THE IMPROVEMENT WHICH COMPRISES CONTINUOUSLY REMOVING HYDROGEN FORMED DURING THE DEHYDROGENATION FROM THE REACTION ZONE BY DIFFUSION THROUGH A NON-POROUS MEMBRANCE SELECTIVELY PERMEABLE TO HYDROGEN, AND CONTACTING THE DIFFUSED HYDROGEN WITH OZYGEN-CONTAINING GAS TO EFFECT SUBSTANTIALY COMPLETE COMBUSTION THEREOF AT THE SURFACE OF THE MEMBRANE.
Claim 2
Dependent Claim
89 words
IN A PROCESS FOR THE DEHYDROGENATION OF DEHYDROGENATABLE HYDROCARBONS IS A REACTOR MAINTAINED UNDER DEHYDROGENATION CONDITIONS WHICH PRECLUDE ANY SUBSTANTIAL THERMAL CRACKING OF THE HYDROCARBONS INCLUDING A TEMPERATURE OF ABOUT 800 TO 1300*F. AND A PRESSURE IN THE RANGE OF 0.05 TO 200 P.S.I.G., THE IMPROVEMENT WHICH COMPRISES CONTINUOUSLY REMOVING HYDROGEN FORMED DURING THE DEHYDROGENATION FROM THE REACTION ZONE BY DIFFUSION THROUGH A NON-POROUS MEMBRANCE SELECTIVELY PERMEABLE TO HYDROGEN, AND CONTACTING THE DIFFUSED HYDROGEN WITH OZYGEN-CONTAINING GAS TO EFFECT SUBSTANTIALY COMPLETE COMBUSTION THEREOF AT THE SURFACE OF THE MEMBRANE.
References Cited (Backward Citations)
CA579535A
Cited
US1592474A
Cited
US1951280A
Cited
US2609382A
Cited
US2902440A
Cited
US2986641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |