US2768885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper sweetening of cracked naphthas and stabilizing the sweetened naphtha with an amine
Assignee: Standard Oil Co
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Filing: 1953-08-27
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Granted: 1956-10-30
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Expires: 1973-08-27
Abstract
No abstract record available.
Inventors
- 👤 Mathew L Kalinowski
- 👤 Robert F Schnaith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:51
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; B; B01; B01J; B01J27/00; B01J27/06; C10G; C10G27/00; C10G27/04; C10G27/08; C10L1/222; C10L1/223; C10L1/228; C10L1/2283
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR SWEETENING A SOUR CRACKED NAPHTHA, WHICH PROCESS COMPRISES DISPERSING IN A SOUR CRACKED NAPHTHA AN EFFECTIVE AMOUNT OF A GRANULAR CATALYST CONSISTING OF CUPRIC CHLORIDE, WATER AND A CARRIER, WHEREIN THE WATER CONTENT IS BETWEEN ABOUT 15 AND 25 WEIGHT PERCENT OF THE CATALYST AND THE WEIGHT RATION OF CARRIER TO CUPRIC CHLORIDE IS BETWEEN ABOUT 12:1 AND 15:1, AT A TEMPERATURE BETWEN ABOUT 70* F. AND ABOUT 90* F. IN THE PRESENCE OF AN AMOUNT OF FREE OXYGEN SUFFICIENT TO CONVERT ESSENTIALLY ALL THE MERCAPTANS IN SAID SOUR NAPHTHA AND THEREBY PRODUCE AN ESSENTIALLY SWEET NAPHTHA, MAINTAINING SAID DISPERSION FOR A TIME SUFFICIENT TO RENDER SAID NAPHTHA ESSENTIALLY SWEET, SEPARATING ESSENTIALLY
Claim 2
Dependent Claim
115 words
A PROCESS FOR SWEETENING A SOUR CRACKED NAPHTHA, WHICH PROCESS COMPRISES DISPERSING IN A SOUR CRACKED NAPHTHA AN EFFECTIVE AMOUNT OF A GRANULAR CATALYST CONSISTING OF CUPRIC CHLORIDE, WATER AND A CARRIER, WHEREIN THE WATER CONTENT IS BETWEEN ABOUT 15 AND 25 WEIGHT PERCENT OF THE CATALYST AND THE WEIGHT RATION OF CARRIER TO CUPRIC CHLORIDE IS BETWEEN ABOUT 12:1 AND 15:1, AT A TEMPERATURE BETWEN ABOUT 70* F. AND ABOUT 90* F. IN THE PRESENCE OF AN AMOUNT OF FREE OXYGEN SUFFICIENT TO CONVERT ESSENTIALLY ALL THE MERCAPTANS IN SAID SOUR NAPHTHA AND THEREBY PRODUCE AN ESSENTIALLY SWEET NAPHTHA, MAINTAINING SAID DISPERSION FOR A TIME SUFFICIENT TO RENDER SAID NAPHTHA ESSENTIALLY SWEET, SEPARATING ESSENTIALLY
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) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |