US3189658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of complex fluoro salts to separate olefins from paraffins
Assignee: Dow Chemical Co
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Filing: 1961-01-18
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Granted: 1965-06-15
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Expires: 1981-01-18
Abstract
No abstract record available.
Inventors
- 👤 Harold W Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:35
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/152
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN A PROCESS OF SEPARATING OLEFINS FROM MIXTURES OF PARAFFIN HYDROCARBONS AND OLEFINS, WHEREIN SAID MIXTURE IS CONTACTED IN THE FLUID STATE WITH A SILVER SALT TO EFFECT FORMATION OF A SILVER OLEFIN COMPLEX AND SAID COMPLEX IS SEPARATED FROM THE NON-COMPLEXED HYDROCARBONS AND THEN SUBSTANTIALLY DECOMPOSED, THUS FORMING THE FREE OLEFIN, THE IMPROVEMENT WHICH COMPRISES CONTACTING THE MIXTURE OF HYDROCARBONS WITH SOLID, ESSENTIALLY ANHYDROUS SILVER HEXAFLUOROPHOSPHATE, AND SEPARATING THE THUSFORMED SILVER-OLEFIN COMPLEX FROM THE NON-COMPLEXED PARAFFIN HYDROCARBONS.
Claim 2
Dependent Claim
78 words
IN A PROCESS OF SEPARATING OLEFINS FROM MIXTURES OF PARAFFIN HYDROCARBONS AND OLEFINS, WHEREIN SAID MIXTURE IS CONTACTED IN THE FLUID STATE WITH A SILVER SALT TO EFFECT FORMATION OF A SILVER OLEFIN COMPLEX AND SAID COMPLEX IS SEPARATED FROM THE NON-COMPLEXED HYDROCARBONS AND THEN SUBSTANTIALLY DECOMPOSED, THUS FORMING THE FREE OLEFIN, THE IMPROVEMENT WHICH COMPRISES CONTACTING THE MIXTURE OF HYDROCARBONS WITH SOLID, ESSENTIALLY ANHYDROUS SILVER HEXAFLUOROPHOSPHATE, AND SEPARATING THE THUSFORMED SILVER-OLEFIN COMPLEX FROM THE NON-COMPLEXED PARAFFIN HYDROCARBONS.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |