US3287281A
Expired / Lapsed
US
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Zeolite agglomerates and the preparation thereof
Assignee: Phibro Corp
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Filing: 1962-11-19
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Granted: 1966-11-22
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Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter L Haden
- 👤 Frank J Dzierzanowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:56
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
143 words
A METHOD FOR AGGLOMERATING A ZEOLITE INTO HARD, WATER-STABLE PARTICLES WHICH COMPRISES MIXING FINELY DIVIDED PARTICLES OF AN ACID-RESISTANT ZEOLITE IN THE PRESENCE OF WATER WITH 81) AN ALKALI METAL HYDROXIDE, (2) A SOURCE OF ALKALI REACTIVE SILICA IN THE FORM OF A FINELY DIVIDED SOLID MATERIAL, SAID ALKALI REACTIVE SILICA BEING SELECTED FROM THE GROUP CONSISTING OF HYDRATED SILICA, AMORPHOUS SILICA, CLAY AND THE SILICA RESIDUE OBTAINED BY ACID LEACHING A SILICATE MINERAL ORIGINALLY HAVING A CONTINUOUS SILICA NETWORK, AND (3) A FINELY DIVIDED SOURCE OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL OXIDE AND ALKALINE EARTH METAL HYDROXIDE, SAID INGREDIENTS (1), (2) AND (3) BEING ADDED IN AMOUNTS SUFFICIENT TO PROVIDE ATTRITION-RESISTANT BONDED AGGLOMERATES WHICH MAINTAIN THEIR FORM IN THE PRESENCE OF ACID SOLUTION, FORMING THE MIXTURE INTO AGGLOMERATES AND DRYING THE AGGLOMERATES TO EFFECT THEIR HARDENING.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |