US2666798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin isomerization
Assignee: Phillips Petroleum Co
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Filing: 1950-05-05
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Granted: 1954-01-19
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Expires: 1970-05-05
Abstract
No abstract record available.
Inventors
- 👤 Francis E Condon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:00
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/02; C07C11/107; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR SHIFTING A DOUBLE BOND OF AN ISOMERIZABLE MONO-OLEFIN, COMPRISING CONTACTING SUCH AN OLEFIN WITH FROM 1 TO 15 PER CENT OF ITS WEIGHT OF ELEMENTAL IODINE AT A TEMPERATURE WITHIN THE LIMITS OF 125 AND 250* F. UNDER A PRESSURE SUFFICIENT TO MAINTAIN THE RESULTING ADMIXTURE IN LIQUID PHASE, FOR A PERIOD IN THE RANGE OF FROM 1 TO 24 HOURS.
Claim 2
Dependent Claim
64 words
A PROCESS FOR SHIFTING A DOUBLE BOND OF AN ISOMERIZABLE MONO-OLEFIN, COMPRISING CONTACTING SUCH AN OLEFIN WITH FROM 1 TO 15 PER CENT OF ITS WEIGHT OF ELEMENTAL IODINE AT A TEMPERATURE WITHIN THE LIMITS OF 125 AND 250* F. UNDER A PRESSURE SUFFICIENT TO MAINTAIN THE RESULTING ADMIXTURE IN LIQUID PHASE, FOR A PERIOD IN THE RANGE OF FROM 1 TO 24 HOURS.
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) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |