US3567388A
Expired / Lapsed
US
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Apparatus for determining carbon on catalyst
Assignee: Standard Oil Co
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Filing: 1968-01-30
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Granted: 1971-03-02
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Expires: 1988-01-30
Abstract
Abstract APPARATUS AND METHOD FOR DETERMINING THE AMOUNT OF CARBON DEPOSITED ON A CATALYST, SUCH AS A HYDROCARBON CRACKING CATALYST, INCLUDING COMBINATION MEANS, MEANS FOR INTRODUCING A CATALYST HAVING CARBON DEPOSITS INTO THE COMBUSTION MEANS, MEANS FOR DETERMINING AND RECORDING THE AMOUNT OF CARBON BURNED OFF THE CATALYST, AND MEANS FOR PURGING THE SYSTEM.
Inventors
- 👤 Sixt Frederick Kapff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:47
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/12; Y; Y10; Y10T; Y10T436/00; Y10T436/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |