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US2695303A
Expired / Lapsed
US
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Amides of oxidized paraffin wax
Assignee: Union Oil Company of California
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Filing: 1950-11-10
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Granted: 1954-11-23
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Expires: 1970-11-10
Abstract
No abstract record available.
Inventors
- 👤 John P Buckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:21
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A FLUID AMIDE PREPARED BY OXIDIZING PARAFFIN WAX BY AIR-BLOWING SAID WAX AT A TEMPERATURE BETWEEN 100* C. AND 140* C. UNTIL THE ACID NUMBER OF THE WAX IS BETWEEN 200 AND 350 MG. KOH/G., SEPARATING FROM THE OXIDIZED WAX A FRACTION HAVING AN ACID NUMBER-SAPONIFICTION NUMBER RATIO BETWEEN 1.6 AND 2.2 TO 1 AND A TOTAL OXYGEN TO CARBOXYL OXYGEN RATIO BETWEEN 1.2 AND 1.8 TO 1 BY REMOVING WATER-SOLUBLE AND A PETROLEUM NAPHTHASOLUBLE CONSTITUENTS FROM SAID OXIDIZED WAX AND AMIDATING SAID FRACTION.
Claim 2
Dependent Claim
84 words
A FLUID AMIDE PREPARED BY OXIDIZING PARAFFIN WAX BY AIR-BLOWING SAID WAX AT A TEMPERATURE BETWEEN 100* C. AND 140* C. UNTIL THE ACID NUMBER OF THE WAX IS BETWEEN 200 AND 350 MG. KOH/G., SEPARATING FROM THE OXIDIZED WAX A FRACTION HAVING AN ACID NUMBER-SAPONIFICTION NUMBER RATIO BETWEEN 1.6 AND 2.2 TO 1 AND A TOTAL OXYGEN TO CARBOXYL OXYGEN RATIO BETWEEN 1.2 AND 1.8 TO 1 BY REMOVING WATER-SOLUBLE AND A PETROLEUM NAPHTHASOLUBLE CONSTITUENTS FROM SAID OXIDIZED WAX AND AMIDATING SAID FRACTION.
References Cited (Backward Citations)
US2166971A
Cited
US2096181A
Cited
US1989968A
Cited
US2103872A
Cited
US2070991A
Cited
US2054638A
Cited
US2089212A
Cited
US2212611A
Cited
US2340112A
Cited
US2415356A
Cited
US2606915A
Cited
US2607783A
Cited
US2608562A
Cited
US2609380A
Cited
US2614981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |