US3595776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasticizer materials derived from crude oils
Assignee: GOLDEN BEAR ACQUISITION CORP
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Filing: 1968-07-15
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Granted: 1971-07-27
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Expires: 1988-07-15
Abstract
Abstract PREPARATION OF PETROLEUM-DERIVED HYDROCARBON OILS WHICH HAVE PARTICULAR UTILITY AS SECONDARY PLASTICIZERS FOR SYNTHETIC POLYMERS AND ELASTOMERS. A LUBRICATING OIL FRACTION HAVING AN INITIAL HIGH CONTENT OF AROMATICS IS SOLVENT EXTRACTED TO PRODUCE AN EXTRACT HAVING AN AROMATICS CONTENT OF AT LEAST 87%, SAID EXTRACT IS ADMIXED WITH A STRONG MINERAL ACID THE SLUDGE WHICH FORMS IS SEPARATED, THE REMAINING ACID OIL IS NEUTRALIZED, THEN SUBJECTED TO VACUUM DISTILLATION, AND IS THEN ADVANTAGEOUSLY HYDROGENATED.
Inventors
- 👤 Donald D Davidson
- 👤 Bernard K Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:48
CPC Classifications
C; C10; C10G; C10G53/00; C10G53/02; C08; C08K; C08K5/00; C08K5/01; C10G53/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |