US3087866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of olefins from c7 to c9 corresponding olefin-paraffin mixtures
Assignee: Union Carbide Corp
•
Filing: 1960-12-09
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Granted: 1963-04-30
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Expires: 1980-12-09
Abstract
No abstract record available.
Inventors
- 👤 John S Burch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:15
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C7/05; C07C7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
THE METHOD OF SEPARATING CORRESPONDING PARAFFINS AND OLEFINS FROM MIXTURES COMPRISED OF HYDROCARBONS CONTAINING FROM SEVEN TO NINE CARBON ATOMS BY DISTILLING SAID MIXTURE WITH ACETONITRILE AS AN AZEOTROPE ENTRAINER AND REMOVING THE PARAFFINIC FRACTION AS THE HETEROGENOUS AZEOTROPE FROM THE ENTRAINER.
Claim 2
Independent Claim
42 words
THE METHOD OF SEPARATING CORRESPONDING PARAFFINS AND OLEFINS FROM MIXTURES COMPRISED OF HYDROCARBONS CONTAINING FROM SEVEN TO NINE CARBON ATOMS BY DISTILLING SAID MIXTURE WITH ACETONITRILE AS AN AZEOTROPE ENTRAINER AND REMOVING THE PARAFFINIC FRACTION AS THE HETEROGENOUS AZEOTROPE FROM THE ENTRAINER.
References Cited (Backward Citations)
US2401282A
Cited
US2679472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |