US2913505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating olefinic hydrocarbons using silver fluoborate and silver fluosilicate solutions
Assignee: Hoechst AG
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Filing: 1957-05-14
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Granted: 1959-11-17
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Expires: 1977-05-14
Abstract
No abstract record available.
Inventors
- 👤 Hans Georg Van Raay
- 👤 Schwenk Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:51
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS FOR SEPARATING A FLUID OLEFINIC HYDROCARBON FROM A FLUID HYDROCARBON MIXTURE CONTAINING SAID OLEFIN WHICH COMPRISES BRINGING SAID HYDROCARBON MIXTURES INTO CONTACT WITH AN AQUEOUS SOLUTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF SILVER FLUOBORATE, SILVER FLUOSILICATE AND A MIXTURE THEREOF.
Claim 2
Dependent Claim
45 words
A PROCESS FOR SEPARATING A FLUID OLEFINIC HYDROCARBON FROM A FLUID HYDROCARBON MIXTURE CONTAINING SAID OLEFIN WHICH COMPRISES BRINGING SAID HYDROCARBON MIXTURES INTO CONTACT WITH AN AQUEOUS SOLUTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF SILVER FLUOBORATE, SILVER FLUOSILICATE AND A MIXTURE THEREOF.
References Cited (Backward Citations)
US2391404A
Cited
US2458067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |