US3101304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation process for fluorocarbons
Assignee: EIDP Inc
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Filing: 1960-04-28
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Granted: 1963-08-20
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Expires: 1980-04-28
Abstract
No abstract record available.
Inventors
- 👤 Wiist Herbert Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:38
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/383; C07C17/386
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR SEPARATING VOLATILE PERFLUOROCARBONS OF ONE TO FIVE CARBON ATOMS FROM CLOSE BOILING AND AZEOTROPE FORMING FLUOROCARBONS OF ONE TO FIVE CARBON ATOMS CONTAINING, IN ADDITION TO FLUORINE, ELEMENTS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, CHLORINE AND BROMINE, BY EXTRACTIVE DISRILLATION CONDITIONS AND SELECTED COMPOUND, LIQUID AT DISTILLATION CONDITIONS ANS SELECTED FROM THE CLASS CONSISTING OF BENZENE, ALKYL BENZENES CHLORINATED ALIPHATIC HYDROCARBONS, CHLORINATED BEZENES AND CHLORINATED ALKYL BENZENES.
Claim 2
Dependent Claim
71 words
A PROCESS FOR SEPARATING VOLATILE PERFLUOROCARBONS OF ONE TO FIVE CARBON ATOMS FROM CLOSE BOILING AND AZEOTROPE FORMING FLUOROCARBONS OF ONE TO FIVE CARBON ATOMS CONTAINING, IN ADDITION TO FLUORINE, ELEMENTS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, CHLORINE AND BROMINE, BY EXTRACTIVE DISRILLATION CONDITIONS AND SELECTED COMPOUND, LIQUID AT DISTILLATION CONDITIONS ANS SELECTED FROM THE CLASS CONSISTING OF BENZENE, ALKYL BENZENES CHLORINATED ALIPHATIC HYDROCARBONS, CHLORINATED BEZENES AND CHLORINATED ALKYL BENZENES.
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) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |