Patent US3693891A successfully refreshed from Google Patents.
Patent US2611735A successfully refreshed from Google Patents.
US2611735A
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Process for removing metals from crude petroleum oils
Assignee: Sinclair Refining Co
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Filing: 1947-06-21
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Granted: 1952-09-23
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Expires: 1967-06-21
Abstract
No abstract record available.
Inventors
- 👤 Coons Edward Adamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:22
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A PROCESS INVOLVING PRETREATMENT OF CRUDE PETROLEUM OILS CONTAINING METAL COMPOUNDS AND SUBSEQUENT USE OF THE PRETREATED CRUDE PETROLEUM OILS AS A CHARGING STOCK IN A CATALYTIC CRACKING OPERATION, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE CRUDE PETROLEUM OILS IN THE PRETREATING OPERATION AND PRIOR TO BRINGING THE OIL INTO CONTACT WITH THE CRACKING CATALYST INTO INTIMATE ADMIXTURE WITH FLUOROSULFONIC ACID WHEREBY THE
Claim 2
Dependent Claim
63 words
IN A PROCESS INVOLVING PRETREATMENT OF CRUDE PETROLEUM OILS CONTAINING METAL COMPOUNDS AND SUBSEQUENT USE OF THE PRETREATED CRUDE PETROLEUM OILS AS A CHARGING STOCK IN A CATALYTIC CRACKING OPERATION, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE CRUDE PETROLEUM OILS IN THE PRETREATING OPERATION AND PRIOR TO BRINGING THE OIL INTO CONTACT WITH THE CRACKING CATALYST INTO INTIMATE ADMIXTURE WITH FLUOROSULFONIC ACID WHEREBY THE
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Cited
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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) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |