US2820834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation of hydrocarbons in the presence of a samarium sesquioxide catalyst
Assignee: Heavy Minerals Co
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Filing: 1955-06-14
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Granted: 1958-01-21
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Expires: 1975-06-14
Abstract
No abstract record available.
Inventors
- 👤 Vasili I Komarewsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:05
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; B; B01; B01J; B01J23/00; B01J23/10; C07C5/00; C07C5/32; C07C5/321; C07C5/322; C07C5/327; C07C5/333; C07C5/3332; C07C5/367; C07C5/373; C07C5/393; C07C5/41; C07C5/412; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A PROCESS FOR DEHYDROGENATION WHICH COMPRISES SUBJECTING ALIPHATIC HYDROCARBONS TO THE ACTION OF A CATALYST OF SAMARIUM SESQUIOXIDE AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 430*C. TO 650*C. AT A SPACE VELOCITY OF NOT MORE THAN ABOUT 2.0.
Claim 2
Dependent Claim
39 words
A PROCESS FOR DEHYDROGENATION WHICH COMPRISES SUBJECTING ALIPHATIC HYDROCARBONS TO THE ACTION OF A CATALYST OF SAMARIUM SESQUIOXIDE AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 430*C. TO 650*C. AT A SPACE VELOCITY OF NOT MORE THAN ABOUT 2.0.
References Cited (Backward Citations)
US1871117A
Cited
US2148129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |