US3247270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cycloolefin production
Assignee: Columbian Carbon Co
•
Filing: 1962-06-14
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Granted: 1966-04-19
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Expires: 1982-06-14
Abstract
No abstract record available.
Inventors
- 👤 James C Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:13
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/16; C07C2531/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A PROCESS OF PREPARING A CYCLOOLEFIN HAVING AT LEAST 8 CARBON ATOMS IN THE RING AND HAVING AT LEAST TWO UNSATURATED CARBON-TO-CARBON LINKAGES LINT HE RING, AND OTHER COMPOUNDS, WHERIN A CONJUGATED OPEN-CHAIN DIOLEFIN IS SUBJECTED TO AN ELEVATED TEMPERATURE IN THE PRESENCE OF A CATALYST DERIVED FRO THE COMPONENTS (1) A COMPOUND OF A NONTRANSITION ELEMENT CONSISTING OF THE NONTRANSITION ELEMENTS OF PEIODIC GROUP IIIA AND THE NONTRANSITION METALS OF PERIODIC GROUPS IA, IIA, IIB, OR IVA, SAID COMPOUND BEING SELECTED FROMTHE GROUP CONSISTING OF THE HYDRIDES, ORGANOHYDRIDES, ORGANOHALIDES, AND ORGANO COMPOUNDS OF THE SAID ELEMENTS, AND (2). NICKEL CARBONYL, THE MOLE RATION OF (1) AND (2) BEING BETWEEN APPROXIMATELY 1 TO 10 AND 10 TO 1.
Claim 2
Dependent Claim
118 words
A PROCESS OF PREPARING A CYCLOOLEFIN HAVING AT LEAST 8 CARBON ATOMS IN THE RING AND HAVING AT LEAST TWO UNSATURATED CARBON-TO-CARBON LINKAGES LINT HE RING, AND OTHER COMPOUNDS, WHERIN A CONJUGATED OPEN-CHAIN DIOLEFIN IS SUBJECTED TO AN ELEVATED TEMPERATURE IN THE PRESENCE OF A CATALYST DERIVED FRO THE COMPONENTS (1) A COMPOUND OF A NONTRANSITION ELEMENT CONSISTING OF THE NONTRANSITION ELEMENTS OF PEIODIC GROUP IIIA AND THE NONTRANSITION METALS OF PERIODIC GROUPS IA, IIA, IIB, OR IVA, SAID COMPOUND BEING SELECTED FROMTHE GROUP CONSISTING OF THE HYDRIDES, ORGANOHYDRIDES, ORGANOHALIDES, AND ORGANO COMPOUNDS OF THE SAID ELEMENTS, AND (2). NICKEL CARBONYL, THE MOLE RATION OF (1) AND (2) BEING BETWEEN APPROXIMATELY 1 TO 10 AND 10 TO 1.
References Cited (Backward Citations)
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US2969408A
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US2925392A
Cited
US2917514A
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US2943117A
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US3131155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |