US2911433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Naphthenic acid derivatives and their preparation
Assignee: Sunoco Inc
•
Filing: 1956-05-23
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Granted: 1959-11-03
•
Expires: 1976-05-23
Abstract
No abstract record available.
Inventors
- 👤 Samuel E Jolly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:57
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
A NEW COMPOSITION OF MATTER PREPARED BY CONTACTING ESTER OF PETROLEUM NAPHTHENIC ACIDS WITH OZONE UNDER CONDITIONS TO PROVIDE INCREASE IN SAPONIFICATION NUMBER OF AT LEAST 25 MG. OF KOH PER GRAM, AND ESTERIFYING ADDITIONAL CARBOXYL GROUPS PRODUCED IN SAID CONTCTING WITH A HYDROXYL ORGANIC COMPOUND, SAID ESTERS BEING PLASTICIZING ESTERS ADAPTED FOR THE PLASTICIZING OF SYNTHETIC ORGANIC RESINS.
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Cited
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US2329707A
Cited
US2477717A
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US2582264A
Cited
US2603619A
Cited
US2775639A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |