Patent US1810984A successfully refreshed from Google Patents.
US3175013A
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Removal of cyclopentadiene from aliphatic hydrocarbons by selective clathration with nickel tetra-(gamma-picoline) dithiocyanate
Assignee: Phillips Petroleum Co
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Filing: 1960-11-28
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Granted: 1965-03-23
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Expires: 1980-11-28
Abstract
No abstract record available.
Inventors
- 👤 Clifford E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:44
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/152; C07C2601/00; C07C2601/06; C07C2601/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
A METHOD OF RECOVERING CYCLOPENTADIEN FROM A HYDROCARBON FROM WHICH IT IS NOT READILY SEPARABLE BY DISTILLATION WHICH COMPRISES CONTACTING NICKEL TETRA (GAMMAPICOLINE) DITHIOCYANATE WITH SAID HYDROCARBON CONTAINING SAID CYCLOPENTADIENE, SEPARATING UNRRECTED HYDROCARBON FROM SOLID REACTON PRODUCT, AND DECOMPOSING SAID PRODUCT, THUS OBTAINING CYCLOPENTADIENE IN A RECOVERABLE CONDITION.
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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |