Patent US3755393A successfully refreshed from Google Patents.
US3755393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of rhodium fixed to basic ion exchangers in the form of rhodium carbonylate
Assignee: BASF SE
•
Filing: 1971-09-13
•
Granted: 1973-08-28
•
Expires: 1991-09-13
Abstract
Abstract PROCESS FOR THE RECOVERY OF RHODIUM FIXED TO BASIC ION EXCHANGERS IN THE FORM OF RHODIUM CARBONYLATE WITH SIMULTANEOUS REGENERATION OF THE BASIC ION EXCHANGERS, COMPRISING TREATING THE BASIC ION EXCHANGERS LADEN WITH RHODIUM CARBONYLATE WITH A MIXTURE OF LOWER ALKANOLS, WATER AND WATER-SOLUBLE ALIPHATIC AMINES IN THE PRESENCE OF MOLECULAR OXYGEN.
Inventors
- 👤 W Kniese
- 👤 W Himmele
- 👤 W Aquila
- 👤 H Nienburg
- 👤 J Plueckhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:21
CPC Classifications
C; C01; C01G; C01G55/00; C01G55/001; B; B01; B01J; B01J49/00; B01J49/50; B01J49/57; C07; C07C; C07C45/00; C07C45/49; C07C45/50; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/40; C22B3/402; C22B3/42; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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 |