Patent US3730850A successfully refreshed from Google Patents.
US3730850A
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US
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Removal of odor-causing materials from sulphur-containing plasticizers by distillation with a hydrocarbon
Assignee: Phillips Petroleum Co
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Filing: 1970-04-17
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Granted: 1973-05-01
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Expires: 1990-04-17
Abstract
Abstract OBJECTIONABLE ODOR IS SUBSTANTIALLY REMOVED FROM PLASTICIZED SULFUR-CONTAINING COMPOSITIONS BY A PROCESS COMPRISING ADMIXING CERTAIN HIGH-BOILING INERT SOLVENTS WITH PARTIALLY-REACTED PLASTICIZER AND STRIPPING OUT THE HIGH BOILING INERT SOLVENT UNDER REDUCED PRESSURE WHILE COMPLETING THE PLASTICIZER PREPARATION.
Inventors
- 👤 R Louthan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |