US3755487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin complexing process
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1972-06-02
•
Granted: 1973-08-28
•
Expires: 1992-06-02
Abstract
Abstract A PROCESS IS DESCRIBED FOR SEPARATING AND RECOVERING COMPLEXIBLE LIQUIDS FROM FEEDSTREAMS CONTAINING THEM, COMPRISING THE STEPS OF COMPLEXING THE LIGANDS WITH A COMPLEXING SOLUTION, STRIPPING IMPURTIES OUT OF SOLUTION, DECOMPLEXING BY FLASHING AT PRESSURES OF FROM 1 ATMOSPHERE TO ABOUT 40 ATMOSPHERES, RECYCLING SOLVENT TO THE COMPLEXER AND THEREAFTER RECOVERING SAID LIGANDS AS A HIGH PURITY PRODUCT. THE COMPLEXING SOLUTION COMPRISES GROUP I-B METAL SALTS DISSOLVED IN LOW VOLATILITY AROMATIC SOLVENTS. THE LIGANDS ARE DECOMPLEXED BY EITHER FLASHING OFF A HIGH PRESSURES OR BY MULTIPLE STAGE FLASHING.
Inventors
- 👤 C Jahning
- 👤 D Savage
- 👤 H Horowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:11
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/152; C07C7/156
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |