US3059993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen-ion-exchange of zeolites
Assignee: Union Carbide Corp
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Filing: 1960-09-12
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Granted: 1962-10-23
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Expires: 1980-09-12
Abstract
No abstract record available.
Inventors
- 👤 Richard M Barrer
- 👤 David C Sammon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:52
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD FOR HYDROGEN ION-EXCHANGING A THREE-DIMENSIONAL CRYSTALLINE ZEOLITE CONTAINING SILVER CATIONS COM-PRISING BRINGING SAID CRYSTALLINE ZEOLITE INTO INTIMATE CONTACT WITH AN AQUEOUS SOLUTION CONTAINING (1) HYDROGENN IONS IN A CONCENTRATION NOT SUBSTANTIALLY GREATER THAN THE HYDROGEN ION CONCENTRATION OF WATER, (2) ANIONS WHICH FORM PRECIPITATES WITH SAID SILVER CATIONS OF SAID CRYSTALLINE ZEOLITE AND (3) ONLY CATIONS WHICH PERMIT HYDROGEN IONS IN SAID AQUEOUS SOLUTION TO COMPETE SUCCESSFULLYY FOR AT LEAST A PART OF THE EXCHAGE SITES IN SAID CRYSTALLINE ZEOLITE, EXCHANGING HYDROGEN IONS IN SAID SOLUTION FOR AT LEAST A PART OF SAID SILVER CATIONS, AND PRECIPITATING AT LEAST A PART OF SAID SILVER CATIONS IN SAID ZEOLITE.
Claim 2
Independent Claim
110 words
A METHOD FOR HYDROGEN ION-EXCHANGING A THREE-DIMENSIONAL CRYSTALLINE ZEOLITE CONTAINING SILVER CATIONS COM-PRISING BRINGING SAID CRYSTALLINE ZEOLITE INTO INTIMATE CONTACT WITH AN AQUEOUS SOLUTION CONTAINING (1) HYDROGENN IONS IN A CONCENTRATION NOT SUBSTANTIALLY GREATER THAN THE HYDROGEN ION CONCENTRATION OF WATER, (2) ANIONS WHICH FORM PRECIPITATES WITH SAID SILVER CATIONS OF SAID CRYSTALLINE ZEOLITE AND (3) ONLY CATIONS WHICH PERMIT HYDROGEN IONS IN SAID AQUEOUS SOLUTION TO COMPETE SUCCESSFULLYY FOR AT LEAST A PART OF THE EXCHAGE SITES IN SAID CRYSTALLINE ZEOLITE, EXCHANGING HYDROGEN IONS IN SAID SOLUTION FOR AT LEAST A PART OF SAID SILVER CATIONS, AND PRECIPITATING AT LEAST A PART OF SAID SILVER CATIONS IN SAID ZEOLITE.
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) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |