Patent US3243467A successfully refreshed from Google Patents.
US3243467A
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Oligomerization of conjugated dienes
Assignee: Phillips Petroleum Co
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Filing: 1963-09-23
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Granted: 1966-03-29
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Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Zuech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:02
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07C2/50; C07C2/52; C07C2531/00; C07C2531/16; C07C2531/22; C07C2531/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
IN A PROCESS FOR THE OLIGOMERIZATION OF CONJUGATED DIENES WHICH COMPRISES CONTACTING SAID DIENES WITH THE REDUCTION PRODUCT OBTAINED BY MIXING A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF LITHIUM, POTASSIUM, SODIUM, CESIUM, RUBIDIUM, AND CALCIUM WITH A SUBSTITUTED NICKEL COMPOUND OF THE FORMULAS
Claim 2
Dependent Claim
45 words
IN A PROCESS FOR THE OLIGOMERIZATION OF CONJUGATED DIENES WHICH COMPRISES CONTACTING SAID DIENES WITH THE REDUCTION PRODUCT OBTAINED BY MIXING A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF LITHIUM, POTASSIUM, SODIUM, CESIUM, RUBIDIUM, AND CALCIUM WITH A SUBSTITUTED NICKEL COMPOUND OF THE FORMULAS
References Cited (Backward Citations)
FR1301247A
Cited
US3148224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |