US3349009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of hydrocarbons by distilling with a fluorocarbon
Assignee: Phillips Petroleum Co
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Filing: 1965-11-02
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Granted: 1967-10-24
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Expires: 1985-11-02
Abstract
No abstract record available.
Inventors
- 👤 Forrest N Ruehlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C7/05; C07C7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF SEPARATING A MILXTURE OF CLOSE BOILING HYDROCARBONS INTO ONE OR MORE COMPONENTS COMPRISING: (A) ADDING A FLUOROHALOCARBON HAVING AT LEAST ONE FLUORINE ATOM, AT LEAST ONE HALOGEN ATOM OTHER THEN FLUORINE AND 2 TO 6 CARBON ATOMS PER MOLECULE TO THE MIXTURE TO FORM AN ADMIXTURE, SAID FLUOROHALOCARBON FUNCTIONING AS AN ENTRAINER, (B) DISTILLING THE ADMIXTURE THUS FORMED WHEREBY AT LEAST ONE OF THE COMPONENTS OF THE MIXTURE IS OBTAINED IN A RELATIVELY PURE STATE.
Claim 2
Independent Claim
78 words
THE METHOD OF SEPARATING A MILXTURE OF CLOSE BOILING HYDROCARBONS INTO ONE OR MORE COMPONENTS COMPRISING: (A) ADDING A FLUOROHALOCARBON HAVING AT LEAST ONE FLUORINE ATOM, AT LEAST ONE HALOGEN ATOM OTHER THEN FLUORINE AND 2 TO 6 CARBON ATOMS PER MOLECULE TO THE MIXTURE TO FORM AN ADMIXTURE, SAID FLUOROHALOCARBON FUNCTIONING AS AN ENTRAINER, (B) DISTILLING THE ADMIXTURE THUS FORMED WHEREBY AT LEAST ONE OF THE COMPONENTS OF THE MIXTURE IS OBTAINED IN A RELATIVELY PURE STATE.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |