Patent US2582047A successfully refreshed from Google Patents.
Patent US3138645A successfully refreshed from Google Patents.
US3138645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation process and stabilization of product
Assignee: Pure Oil Co
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Filing: 1961-08-21
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Granted: 1964-06-23
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Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Le Roi E Hutchings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:43
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/20; C10G29/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
THE PROCESS OF PREPARING PARAFFINIC HYDROCARBONS BOILING IN THE RANGE OF ABOUT 49* TO 100* C., AND HAVING A CONTENT OF AROMATIC HYDROCARBONS OF LESS THAN ABOUT 0.5% BY VOLUME, WHICH COMPRISES REFORMING A NAPHTHA RICH IN C6 TO C8 PARAFFINIC AND NAPHTHENIC HYDROCARBONS TO FORM A REFORMATE, STABILIZING THE REFORMATE, SUBJECTING THE STABILIZED REFORMATE TO SOLVENT EXTRACTION USING A SOLVENT SELECTIVE FOR THE AROMATIC HYDROCARBONS PRESENT, RECOVERING A RAFFINATE PHASE RICH IN
Claim 2
Dependent Claim
73 words
THE PROCESS OF PREPARING PARAFFINIC HYDROCARBONS BOILING IN THE RANGE OF ABOUT 49* TO 100* C., AND HAVING A CONTENT OF AROMATIC HYDROCARBONS OF LESS THAN ABOUT 0.5% BY VOLUME, WHICH COMPRISES REFORMING A NAPHTHA RICH IN C6 TO C8 PARAFFINIC AND NAPHTHENIC HYDROCARBONS TO FORM A REFORMATE, STABILIZING THE REFORMATE, SUBJECTING THE STABILIZED REFORMATE TO SOLVENT EXTRACTION USING A SOLVENT SELECTIVE FOR THE AROMATIC HYDROCARBONS PRESENT, RECOVERING A RAFFINATE PHASE RICH IN
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |