Patent US2500736A successfully refreshed from Google Patents.
US2500736A
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Method of separating a diolefin from a monoolefin
Assignee: Standard Oil Development Co
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Filing: 1947-01-04
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Granted: 1950-03-14
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Expires: 1967-01-04
Abstract
No abstract record available.
Inventors
- 👤 Leland K Beach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:47
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/14875; C07C7/14891
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
THE METHOD OF SEPARATING A DIOLEFIN FROM A MONO-OLEFIN IN A MIXTURE THEREOF, WHICH COMPRISES CONTACTING THE MIXTURE WITH A LIQUID PHENOLIC COMPOUND IN THE PRESENCE OF AN ACID CONDENSING CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID AND A SULFONIC ACID; AT AN ELEVATED TEMPERATURE OF FROM 50* TO 250*C. SUITABLE FOR BRINGING ABOUT REACTION OF THE DIOLEFIN WITH THE
Claim 2
Independent Claim
62 words
THE METHOD OF SEPARATING A DIOLEFIN FROM A MONO-OLEFIN IN A MIXTURE THEREOF, WHICH COMPRISES CONTACTING THE MIXTURE WITH A LIQUID PHENOLIC COMPOUND IN THE PRESENCE OF AN ACID CONDENSING CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID AND A SULFONIC ACID; AT AN ELEVATED TEMPERATURE OF FROM 50* TO 250*C. SUITABLE FOR BRINGING ABOUT REACTION OF THE DIOLEFIN WITH THE
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US2035102A
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US2283465A
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US2265583A
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US2370810A
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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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |