US2767205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardening oxidized microcrystalline wax
Assignee: Sunoco Inc
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Filing: 1953-02-27
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Granted: 1956-10-16
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Expires: 1973-02-27
Abstract
No abstract record available.
Inventors
- 👤 William E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:38
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
METHOD FOR INCREASING THE HARDNESS OF PARTIALLY OXIDIZED MICROCRYSTALLINE WAX WHICH COMPRISES: CONTACTING SUCH OXIDIZED WAX, CONTAINING CARBOXYLIC ACIDS FORMED IN SITU, IN LIQUID PHASES WITH SILICA GEL, THEREBY TO ADSORB RELATIVELY SOFT CONSTITUENTS OF SAID OXIDIZED WAX ON SAID SILICA GEL; AND SEPARATING FROM SAID SILICA GEL A NONADSORBED, RELATIVELY HARD FRACTION OF SAID OXIDIZED WAX, THE PROPORTIONS OF SILICA GEL AND OXIDIZED WAX WHICH ARE CONTACTED BEING SUCH THAT SAID FRACTION HAS A SAPONIFICATION NUMBER WHICH IS AT LEAST 60% OF THAT OF SAID OXIDIZED WAX.
Claim 2
Dependent Claim
88 words
METHOD FOR INCREASING THE HARDNESS OF PARTIALLY OXIDIZED MICROCRYSTALLINE WAX WHICH COMPRISES: CONTACTING SUCH OXIDIZED WAX, CONTAINING CARBOXYLIC ACIDS FORMED IN SITU, IN LIQUID PHASES WITH SILICA GEL, THEREBY TO ADSORB RELATIVELY SOFT CONSTITUENTS OF SAID OXIDIZED WAX ON SAID SILICA GEL; AND SEPARATING FROM SAID SILICA GEL A NONADSORBED, RELATIVELY HARD FRACTION OF SAID OXIDIZED WAX, THE PROPORTIONS OF SILICA GEL AND OXIDIZED WAX WHICH ARE CONTACTED BEING SUCH THAT SAID FRACTION HAS A SAPONIFICATION NUMBER WHICH IS AT LEAST 60% OF THAT OF SAID OXIDIZED WAX.
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) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |