US3223741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon promoters for dimerization
Assignee: Millennium Petrochemicals Inc
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Filing: 1962-12-31
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Granted: 1965-12-14
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Feldman Julian
- 👤 Bernard A Saffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:52
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07C2531/00; C07C2531/16; C07C2531/22; C07C2601/00; C07C2601/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A PROCESS FOR THE PRODUCTION OF 1,5-CYCLO-OCTADIENE BY CONTACTING, 1,3-BUTADIENE WITH A ZEROVALENT NICKEL CARBONYL CATALYST DERIVED FROM NICKEL CARBONYL BY THE REPLACEMENT OF AT LEAST ONE OF THE CARBONYL GROUPS BY A COMPOUND OF A TRIVALENT ELEMENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS, ANTIMONY, AND ARSENIC, THE IMPROVEMENT WHICH COMPRISES ADMIXING WITH SAID 1,3BUTADIENE A MINOR AMOUNT OF A HYDROCARBON COMPOUND CONTAINING AT LEAST TWO PHENYL GROUPS SELECTED FROM THE GROUP CONSISTING OF FLUORENE, BIPHENYL, DIPHENYLMETHANE, ACENAPHTHENE, PHENANTHRENE, ANTHRACENE, TRANS-STILBENE, AND TETRAPHENYLETHYLENE.
Claim 2
Dependent Claim
85 words
IN A PROCESS FOR THE PRODUCTION OF 1,5-CYCLO-OCTADIENE BY CONTACTING, 1,3-BUTADIENE WITH A ZEROVALENT NICKEL CARBONYL CATALYST DERIVED FROM NICKEL CARBONYL BY THE REPLACEMENT OF AT LEAST ONE OF THE CARBONYL GROUPS BY A COMPOUND OF A TRIVALENT ELEMENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS, ANTIMONY, AND ARSENIC, THE IMPROVEMENT WHICH COMPRISES ADMIXING WITH SAID 1,3BUTADIENE A MINOR AMOUNT OF A HYDROCARBON COMPOUND CONTAINING AT LEAST TWO PHENYL GROUPS SELECTED FROM THE GROUP CONSISTING OF FLUORENE, BIPHENYL, DIPHENYLMETHANE, ACENAPHTHENE, PHENANTHRENE, ANTHRACENE, TRANS-STILBENE, AND TETRAPHENYLETHYLENE.
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |