Patent US2695321A successfully refreshed from Google Patents.
US2695321A
Expired / Lapsed
US
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Recovery of perfluoro carbon compounds
Assignee: Phillips Petroleum Co
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Filing: 1951-10-26
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Granted: 1954-11-23
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Expires: 1971-10-26
Abstract
No abstract record available.
Inventors
- 👤 Martin R Cines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:50
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR SEPARATING A MIXTURE, COMPRISING A MAJOR PROPORTION OF A NONACIDIC PERFLUORO ORGANIC COMPOUND AND A MINOR PROPORTION OF A HYDROCARBON, INTO ITS COMPONENTS AND RECOVERING SAID NONACIDIC PERFLUORO ORGANIC COMPOUND AS SUCH AS ONE OF THE PRODUCTS OF THE PROCESS, COMPRISING TREATING SAID MIXTURE WITH A POROUS ADSORBENT UNDER LIQUID PHASE ADSORPTION CONDITIONS, FROM
Claim 2
Dependent Claim
57 words
A PROCESS FOR SEPARATING A MIXTURE, COMPRISING A MAJOR PROPORTION OF A NONACIDIC PERFLUORO ORGANIC COMPOUND AND A MINOR PROPORTION OF A HYDROCARBON, INTO ITS COMPONENTS AND RECOVERING SAID NONACIDIC PERFLUORO ORGANIC COMPOUND AS SUCH AS ONE OF THE PRODUCTS OF THE PROCESS, COMPRISING TREATING SAID MIXTURE WITH A POROUS ADSORBENT UNDER LIQUID PHASE ADSORPTION CONDITIONS, FROM
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) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |