Patent US3557023A successfully refreshed from Google Patents.
US3557023A
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US
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Process of preparing an adsorbent for treating beverages from acid-activated montmorin minerals
Assignee: fur Brauerei-Industrie AG
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Filing: 1968-07-02
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Granted: 1971-01-19
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Expires: 1988-07-02
Abstract
Abstract THE MINERAL WHICH HAS BEEN ACTIVATED BY AN ACID TREATMENT AND HAS BEEN SEPARATED FROM THE ACTIVATING ACID IS SUBJECTED TO A CHEMICAL AFTERTREATMENT WHICH REDUCES THE AMOUNT OF RESIDUAL IRON AND/OR ALUMINUM WHICH CAN BE TRANSFERRED FROM SAID MONTMORIN MINERAL TO SLIGHTLY ACID LIQUIDS CONTACTING THE SAME.
Inventors
- 👤 Karl J Raible
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:14
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12; A; A23; A23L; A23L2/00; A23L2/70; A23L2/80; C; C12; C12H; C12H1/00; C12H1/02; C12H1/04; C12H1/0408; Y; Y02; Y02P; Y02P20/00; Y02P20/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |