US3754047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low volatile complexing solutions for olefin recovery
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1972-06-02
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Granted: 1973-08-21
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Expires: 1992-06-02
Abstract
Abstract A PROCESS FOR SEPARATING COMPLEXIBLE LIGANDS IS DISCLOSED WHEREIN A FEEDSTREAM CONTAINING COMPLEXIBLE LIGANDS IS CONTACTED WITH A CUPROUS SALT-SORBENT MATERIAL DISSOLVED IN A COMPLEXING SOLVENT, THE COMPLEXING SOLVENT CONTAINS A MAJOR AMOUNT OF A MULTI-RINGED, HIGH BOILING, LOWMELTING AROMATIC AND A MINOR AMOUNT OF A STRONGLY COMPLEXING, HIGH BOILING, SINGLE RINGED AROMATIC. SEPARATION OF THE LIGANDS IS EFFECTED BY THEIR COMPLEXATION WITH THE CUPROUS SALT-SORBENT MATERIAL WHICH REMOVES SAID LIGANDS FROM THE FEEDSTREAM TO BE SUBSEQUENTLY RECOVERED BY DECOMPLEXING OR LIGAND EXCHANGE TECHNIQUES.
Inventors
- 👤 R Long
- 👤 H Horowitz
- 👤 D Savage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:52
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/152; C07C7/156
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |