US3281489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of butadiene containing stream
Assignee: Phillips Petroleum Co
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Filing: 1964-07-29
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Granted: 1966-10-25
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Expires: 1984-07-29
Abstract
No abstract record available.
Inventors
- 👤 Gordon D Goering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:31
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/14833; C07C7/1485; C07C7/005; C07C7/04; C07C7/05; C07C7/163; C07C7/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A PROCESS FOR PURIFYING A STREAM CONTAINING BUTADIENE COMPRISING: SELECTIVELY HYDROGENATING THE ACETYLENES PRESENT THEREIN; FRACTIONATING THE HYDROGENATED STREAM; SUBJECTING THE BUTADIENE CONTAINING FRACTION TO AN ALDOL CONDENSATION REACTION FOR REMOVAL OF CARBONYLS THEREIN; AND RECOVERING A PURIFIED BUTADINES CONTAINING STREAM.
Claim 2
Dependent Claim
41 words
A PROCESS FOR PURIFYING A STREAM CONTAINING BUTADIENE COMPRISING: SELECTIVELY HYDROGENATING THE ACETYLENES PRESENT THEREIN; FRACTIONATING THE HYDROGENATED STREAM; SUBJECTING THE BUTADIENE CONTAINING FRACTION TO AN ALDOL CONDENSATION REACTION FOR REMOVAL OF CARBONYLS THEREIN; AND RECOVERING A PURIFIED BUTADINES CONTAINING STREAM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |