Patent US3152176A successfully refreshed from Google Patents.
Patent US3095329A successfully refreshed from Google Patents.
US3095329A
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US
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Process for the concentration of substances by absorption from solutions
Assignee: Inventa AG fuer Forschung und Patentverwertung
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Filing: 1958-03-07
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Granted: 1963-06-25
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Expires: 1978-03-07
Abstract
No abstract record available.
Inventors
- 👤 Giesen Johann
- 👤 Muller-Grunwaldt Gertrud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:25
CPC Classifications
B; B01; B01D; B01D15/00; B01D15/08; B01D15/26; B01D15/36; B01D15/361; B01J; B01J47/00; B01J47/014; B01J47/016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR THE CONCENTRATION OF SUBSTANCES FROM SOLUTIONS BY SOLVENT ABSORPTION, WHICH COMPRISES DEPOSITION THE SUBSTANCES ONTO ABSORBENTS SELECTED FROM THE GROUP CONSISTING OF ION EXCHANGERS, ACTIVATED CARBON, SILICA GEL AND ALUMINA, WHICH ARE IMPREGNATED WITH COMPLEX-FORMERS SELECTED FROM THE GROUP CONSISTING OF BORAX, BORIC ACID AND IONS OF COPPER, TIN, ALUMINUM AND SILVER, AND INCOMPLETELY EXTRACTING THE SUBSTANCES WITH SOLUTIONS OF NEUTRAL LIQUIDS SELECTED FROM THE GROUP OF AQUEOUS NEUTRAL SALTS AND OF MATERIALS ANALOGOUS TO THE ABSORBED SUBSTANCES, THE QUALITY OF SAID NEUTRAL LIQUIDS BEING LESS THAN THAT OF THE SOLVENT USED IN THE ABSORPTION, ALLOWING PART OF THE SUBSTANCE TO REMAIN ON THE ABSORBENT.
Claim 2
Dependent Claim
108 words
A PROCESS FOR THE CONCENTRATION OF SUBSTANCES FROM SOLUTIONS BY SOLVENT ABSORPTION, WHICH COMPRISES DEPOSITION THE SUBSTANCES ONTO ABSORBENTS SELECTED FROM THE GROUP CONSISTING OF ION EXCHANGERS, ACTIVATED CARBON, SILICA GEL AND ALUMINA, WHICH ARE IMPREGNATED WITH COMPLEX-FORMERS SELECTED FROM THE GROUP CONSISTING OF BORAX, BORIC ACID AND IONS OF COPPER, TIN, ALUMINUM AND SILVER, AND INCOMPLETELY EXTRACTING THE SUBSTANCES WITH SOLUTIONS OF NEUTRAL LIQUIDS SELECTED FROM THE GROUP OF AQUEOUS NEUTRAL SALTS AND OF MATERIALS ANALOGOUS TO THE ABSORBED SUBSTANCES, THE QUALITY OF SAID NEUTRAL LIQUIDS BEING LESS THAN THAT OF THE SOLVENT USED IN THE ABSORPTION, ALLOWING PART OF THE SUBSTANCE TO REMAIN ON THE ABSORBENT.
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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |