US3004081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cycloolefin production
Assignee: Cities Service Research and Development Co
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Filing: 1959-05-29
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Granted: 1961-10-10
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Expires: 1979-05-29
Abstract
No abstract record available.
Inventors
- 👤 Bosmajian George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:01
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C07C2531/00; C07C2531/16; C07C2531/22; C07C2531/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN A CONTINUOUS PROCESS OF DIMERIZING BUTADIENE TO CYCLOOCTADIENE, THE IMPROVEMENT INCLUDING THE STEPS OF INTRODUCING REACTION INGREDIENTS CONSISTING ESSENTIALLY OF BUTADIENE AND A CATALYST COMPRISING BIS(TRIPHENYLPHOSPHITE) NICKEL DICARBONYL INTO A CONTINUOUS REACTOR, CONDUCTING THE REACTION AT A PRESSURE OF BETWEEN ABOUT 200 AND 600 P.S.I.G., AT A TEMPERATURE OF BETWEEN ABOUT 150 AND 170*C. AT A FEED RATE CORRESPONDING TO ABOUT 0.2 TO 4 VOLUMES OF LIQUID FEED PER VOLUME OF REACTOR PER HOUR, UTILIZING THE CATALYST AT A CONCENTRATION OF BETWEEN 0.5 AND 4% BY WEIGHT, AND WITHDRAWING REACTION PRODUCTS FROM SAID REACTOR.
Claim 2
Dependent Claim
95 words
IN A CONTINUOUS PROCESS OF DIMERIZING BUTADIENE TO CYCLOOCTADIENE, THE IMPROVEMENT INCLUDING THE STEPS OF INTRODUCING REACTION INGREDIENTS CONSISTING ESSENTIALLY OF BUTADIENE AND A CATALYST COMPRISING BIS(TRIPHENYLPHOSPHITE) NICKEL DICARBONYL INTO A CONTINUOUS REACTOR, CONDUCTING THE REACTION AT A PRESSURE OF BETWEEN ABOUT 200 AND 600 P.S.I.G., AT A TEMPERATURE OF BETWEEN ABOUT 150 AND 170*C. AT A FEED RATE CORRESPONDING TO ABOUT 0.2 TO 4 VOLUMES OF LIQUID FEED PER VOLUME OF REACTOR PER HOUR, UTILIZING THE CATALYST AT A CONCENTRATION OF BETWEEN 0.5 AND 4% BY WEIGHT, AND WITHDRAWING REACTION PRODUCTS FROM SAID REACTOR.
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) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |