US2897142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurization of naphthas followed by treatment with either metallic copper or silver
Assignee: Pure Oil Co
•
Filing: 1956-07-02
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Granted: 1959-07-28
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Expires: 1976-07-02
Abstract
No abstract record available.
Inventors
- 👤 William L Jacobs
- 👤 Weldon G Annable
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:06
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G29/00; C10G29/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE PROCESS FOR PRODUCING NAPHTHAS WHICH PASS THE DISTILLATION-CORROSION TEST FROM HYDROCARBON MIXTURES OF PETROLEUM ORIGIN CONTAINING DELETERIOUS SULFUR COMPOUNDS WHICH COMPRISES SEPARATING A VIRGIN NATHTHA FRACTION CONTAINING BELOW ABOUT 0.1 TO 3.0 PERCENT BY WEIGHT OF SULFUR COMPOUNDS AND HAVING A BOULING RANGE OF ABOUT 200* TO 400* F. FROM SAID HYDROCARBON MIXTURE, SUBJECTING SAID VIRGIN FRACTION TO HYDRODESULFURIZATION AT A TEMPERATURE OF ABOUT 780* F. IN THE PRESENCE OF HYDROGEN AND A CATALYST CAPABLE OF PROMOTING HYDRODESULFURIZATION, SEPARATING A HYDROGEN SULFIDE-FREE HYDRODESULFURIZED PRODUCT CONTAINING ABOUT 0.005 WEIGHT PERCENT TOTAL SULFUR COM-
Claim 2
Dependent Claim
93 words
THE PROCESS FOR PRODUCING NAPHTHAS WHICH PASS THE DISTILLATION-CORROSION TEST FROM HYDROCARBON MIXTURES OF PETROLEUM ORIGIN CONTAINING DELETERIOUS SULFUR COMPOUNDS WHICH COMPRISES SEPARATING A VIRGIN NATHTHA FRACTION CONTAINING BELOW ABOUT 0.1 TO 3.0 PERCENT BY WEIGHT OF SULFUR COMPOUNDS AND HAVING A BOULING RANGE OF ABOUT 200* TO 400* F. FROM SAID HYDROCARBON MIXTURE, SUBJECTING SAID VIRGIN FRACTION TO HYDRODESULFURIZATION AT A TEMPERATURE OF ABOUT 780* F. IN THE PRESENCE OF HYDROGEN AND A CATALYST CAPABLE OF PROMOTING HYDRODESULFURIZATION, SEPARATING A HYDROGEN SULFIDE-FREE HYDRODESULFURIZED PRODUCT CONTAINING ABOUT 0.005 WEIGHT PERCENT TOTAL SULFUR COM-
References Cited (Backward Citations)
US2768932A
Cited
US2761815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |