US3000809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Avoiding heat-front damage in platinum catalyst reforming
Assignee: Standard Oil Co
•
Filing: 1958-12-01
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Granted: 1961-09-19
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Expires: 1978-12-01
Abstract
No abstract record available.
Inventors
- 👤 Jr John A Ridgway
- 👤 Jr William F Curran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:28
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/22; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A PLATINUM-CATALYST NAPHTHA REFORMING SYSTEM INCLUDING LEAD, INTERMEDIATE, AND TAIL REACTION ZONES, A GAS-SEPARATION ZONE, A COMPRESSION ZONE FOR RECYCLING HYDROGEN-RICH SEPARATED GAS, SAID SEPARATED GAS CONTAINING HYDROCARBONS HAVING MORE THAN ONE CARBON ATOM PER MOLECULE, A METHOD OF BRINGING A REACTION ZONE CONTAINING PLATINUM CATALYST ON STREAM AT REFORMING TEMPERATURES DURING OPERATION OF THE REFORMING SYSTEM WHICH COMPRISES PURGING SAID REACTION ZONE WITH FLUE GAS TO REMOVE OXYGEN THEREFROM; PURGING SAID REACTION ZONE WITH A HYDROCRACKING-RESISTANT GAS PREPARED BY CONTACT-
Claim 2
Dependent Claim
82 words
IN A PLATINUM-CATALYST NAPHTHA REFORMING SYSTEM INCLUDING LEAD, INTERMEDIATE, AND TAIL REACTION ZONES, A GAS-SEPARATION ZONE, A COMPRESSION ZONE FOR RECYCLING HYDROGEN-RICH SEPARATED GAS, SAID SEPARATED GAS CONTAINING HYDROCARBONS HAVING MORE THAN ONE CARBON ATOM PER MOLECULE, A METHOD OF BRINGING A REACTION ZONE CONTAINING PLATINUM CATALYST ON STREAM AT REFORMING TEMPERATURES DURING OPERATION OF THE REFORMING SYSTEM WHICH COMPRISES PURGING SAID REACTION ZONE WITH FLUE GAS TO REMOVE OXYGEN THEREFROM; PURGING SAID REACTION ZONE WITH A HYDROCRACKING-RESISTANT GAS PREPARED BY CONTACT-
References Cited (Backward Citations)
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US2873176A
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US2914465A
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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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |