US2954338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for monitoring a solid adsorption process by radioactive means
Assignee: Standard Oil Co
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Filing: 1955-06-24
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Granted: 1960-09-27
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Expires: 1975-06-24
Abstract
No abstract record available.
Inventors
- 👤 Don R Carmody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:42
CPC Classifications
C; C10; C10G; C10G25/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
IN THE OPERATION OF A CATALYTIC CONVERSION PROCESS WHEREIN THE FEED STREAM TO THE CATALYTIC CONVERSION ZONE IS PRETREATED TO REMOVE SMALL QUANTITIES OF ARSENIC BY PASSAGE THROUGHH A BED OF SOLID ADSORBENT IN AN ADSORPTION ZONE, THE IMPROVED METHOD OF MONITORING AND ADSORPTIVE LIFE OF THE ADSORBENT BED IN THE ADSORPTION ZONE WHICH COMPRISES INTRODUCING RADIOACTIVE ARSENIC 73-74 AT A POINT NEAR THE INLET TO THE ADSORPTION ZONE, DETECTING THE LEVEL OF RADIOACTIVITY IN THE ABSORBENT BED AT A POINT NEAR THE DISCHARGE FROM THE ADSORPTION ZONE, AND DISCONTINUING FLOW THROUGH THE ADSORPTION ZONE WHEN A PREDETERMINED LEVEL OF RADIOACTIVITY IS DECTED.
Claim 2
Dependent Claim
103 words
IN THE OPERATION OF A CATALYTIC CONVERSION PROCESS WHEREIN THE FEED STREAM TO THE CATALYTIC CONVERSION ZONE IS PRETREATED TO REMOVE SMALL QUANTITIES OF ARSENIC BY PASSAGE THROUGHH A BED OF SOLID ADSORBENT IN AN ADSORPTION ZONE, THE IMPROVED METHOD OF MONITORING AND ADSORPTIVE LIFE OF THE ADSORBENT BED IN THE ADSORPTION ZONE WHICH COMPRISES INTRODUCING RADIOACTIVE ARSENIC 73-74 AT A POINT NEAR THE INLET TO THE ADSORPTION ZONE, DETECTING THE LEVEL OF RADIOACTIVITY IN THE ABSORBENT BED AT A POINT NEAR THE DISCHARGE FROM THE ADSORPTION ZONE, AND DISCONTINUING FLOW THROUGH THE ADSORPTION ZONE WHEN A PREDETERMINED LEVEL OF RADIOACTIVITY IS DECTED.
Claim 3
Dependent Claim
24 words
THE PROCESS OF CLAIM 1 IN WHICH THE FEED IS HYDROCARBON NAPHTHA CHARGE STOCK TO A CATALYTIC REFORMING SYSTEM USING A PLATINUM-ALUMINA TYPE CATALYST.
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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |