US3093574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arsenic removal from hydrocarbons and conversion thereof
Assignee: Standard Oil Co
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Filing: 1958-05-28
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Granted: 1963-06-11
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Expires: 1978-05-28
Abstract
No abstract record available.
Inventors
- 👤 Ralph J Bertolacini
- 👤 Jr George W Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:50
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06; C10G25/00; C10G25/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE METHOD OF CONVERTING AN ARSENIC-CONTAINING HYDROCARBON NAPHTHA WHICH COMPRISES THE STEP OF CONTACTING SUCH NAPHTHA IN LIQUID PHASE WITH SILICA GEL IMPREGNETED WITH AT LAST ABOUT 20 PERCENT BY WEIGHT, BASED ON SILICA GEL, OF SULFURIC ACID, UNDER CONDITIONS TO REMOVE AT LEAST A SUBSTANTIAL PART OF THE ARSENIC FROM THE NAPHTHA, AND THEREAFTER SUBJECTING AT LEAST A PART OF THE RESULTING CONTACTED NAPHTHA TO CONVERSION CONDITIONS IN THE PRESENCE OF A CATALYST COMPRISING A NOBLE-METAL.
Claim 2
Independent Claim
77 words
THE METHOD OF CONVERTING AN ARSENIC-CONTAINING HYDROCARBON NAPHTHA WHICH COMPRISES THE STEP OF CONTACTING SUCH NAPHTHA IN LIQUID PHASE WITH SILICA GEL IMPREGNETED WITH AT LAST ABOUT 20 PERCENT BY WEIGHT, BASED ON SILICA GEL, OF SULFURIC ACID, UNDER CONDITIONS TO REMOVE AT LEAST A SUBSTANTIAL PART OF THE ARSENIC FROM THE NAPHTHA, AND THEREAFTER SUBJECTING AT LEAST A PART OF THE RESULTING CONTACTED NAPHTHA TO CONVERSION CONDITIONS IN THE PRESENCE OF A CATALYST COMPRISING A NOBLE-METAL.
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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |