Patent US2586198A successfully refreshed from Google Patents.
US2586198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining of wax
Assignee: Union Oil Company of California
•
Filing: 1948-01-05
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Granted: 1952-02-19
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Expires: 1968-01-05
Abstract
No abstract record available.
Inventors
- 👤 Backlund Peter Stanley
- 👤 Paul L Polizzotto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:53
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS OF DECOLORIZING WAX CONTAINING ASPHALTIC AND RESINOUS COLOR BODIES WHICH COMPRISES CONTACTING SAID WAX WITH MAGNESIA AT A TEMPERATURE ABOVE THE MELTING POINT OF THE WAX, EXTRACTING THE RESULTING MIXTURE OF WAX AND MAGNESIA WITH A SOLVENT COMPRISING A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE SATURATED ALIPHATIC ALCOHOLS, KETONES AND ETHERS CONTAINING LESS THAN 6 CARBON ATOMS PER MOLECULE, AND SEPA-
Claim 2
Dependent Claim
65 words
A PROCESS OF DECOLORIZING WAX CONTAINING ASPHALTIC AND RESINOUS COLOR BODIES WHICH COMPRISES CONTACTING SAID WAX WITH MAGNESIA AT A TEMPERATURE ABOVE THE MELTING POINT OF THE WAX, EXTRACTING THE RESULTING MIXTURE OF WAX AND MAGNESIA WITH A SOLVENT COMPRISING A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE SATURATED ALIPHATIC ALCOHOLS, KETONES AND ETHERS CONTAINING LESS THAN 6 CARBON ATOMS PER MOLECULE, AND SEPA-
References Cited (Backward Citations)
US1151523A
Cited
US2287119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |