Patent US2706741A successfully refreshed from Google Patents.
US2706741A
Expired / Lapsed
US
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Catalytic conversions of hydrocarbons
Assignee: California Research LLC
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Filing: 1949-05-16
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Granted: 1955-04-19
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Expires: 1969-05-16
Abstract
No abstract record available.
Inventors
- 👤 Robert P Sieg
- 👤 Homer B Wellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:47
CPC Classifications
B; B01; B01J; B01J21/00; C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/322; C07C5/327; C07C5/333; C07C5/3332
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR DEHYROGENATING HYDROCARBONS WHICH COMPRISES CONTACTING A FEED COMPRISING HYDROCARBONS HAVING 2 TO 8 CARBON ATOMS PER MOLECULE AT A TEMPERATURE OF ABOUT 700* TO ABOUT 1250* F. WITH A CATALYST COMPRISING BELOW ABOUT 77% OF AN OXIDE MATERIAL OF THE GROUP CONSISTING OF ALUMINA AND A MIXTURE OF ALUMINA AND SILICA, ABOVE ABOUT 8% BERYLLIA AND ABOUT 15 TO ABOUT 20%
Claim 2
Dependent Claim
64 words
A PROCESS FOR DEHYROGENATING HYDROCARBONS WHICH COMPRISES CONTACTING A FEED COMPRISING HYDROCARBONS HAVING 2 TO 8 CARBON ATOMS PER MOLECULE AT A TEMPERATURE OF ABOUT 700* TO ABOUT 1250* F. WITH A CATALYST COMPRISING BELOW ABOUT 77% OF AN OXIDE MATERIAL OF THE GROUP CONSISTING OF ALUMINA AND A MIXTURE OF ALUMINA AND SILICA, ABOVE ABOUT 8% BERYLLIA AND ABOUT 15 TO ABOUT 20%
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) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |