Patent US1925490A successfully refreshed from Google Patents.
Patent US3051659A successfully refreshed from Google Patents.
US3051659A
Expired / Lapsed
US
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Method of producing a stable coagel of an alkaline earth fluoride
Assignee: US Philips Corp
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Filing: 1961-02-15
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Granted: 1962-08-28
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Expires: 1981-02-15
Abstract
No abstract record available.
Inventors
- 👤 Troelstra Sjerp Anne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:32
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/0052; B01J13/0056; B01J13/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A METHOD OF PRODUCING A STABLE COAGEL CONSISTING ESSENTIALLY OF AN ALKALINE EARTH FLUORIDE COMPRISING THE STEPS, FORMING A DISPERSION OF AN ALKALINE EARTH FLUORIDE IN WATER, INCREASING THE SURFACE CHARGE ON THE DISPERSED PARTICLES OF SAID ALKALINE EARTH FLUORIDE BY ADDING TO SAID DISPERSION A SOLUTION IN WATER OF A POTENTIAL DETERMINING ION SELECTED FROM THE GROUP CONSISTING OF CA++, MG++, ZN++, SR++, CD++, CU++, NI++, MN++, CO++, FE+++, NH4+, PB++, CE+++, CS+, UO2++, LI+ AND TH4+ AND THEN ADDING TO SAID DISPERSION, IN AN AMOUNT SUFFICEINT TO COAGULATE SAID DISPERSION, A COAGULATING SOLUTION CONSISTING OF A SOLUTION OF AN ELECTROLYTE IN WATER, THE AMOUNT OF WATER IN SAID COAGULATING SOLUTION BEING SUFFICIENT TO PRODUCE A GEL CONTAINING FROM 50% 98% BY VOLUME OF WATER.
Claim 2
Independent Claim
126 words
A METHOD OF PRODUCING A STABLE COAGEL CONSISTING ESSENTIALLY OF AN ALKALINE EARTH FLUORIDE COMPRISING THE STEPS, FORMING A DISPERSION OF AN ALKALINE EARTH FLUORIDE IN WATER, INCREASING THE SURFACE CHARGE ON THE DISPERSED PARTICLES OF SAID ALKALINE EARTH FLUORIDE BY ADDING TO SAID DISPERSION A SOLUTION IN WATER OF A POTENTIAL DETERMINING ION SELECTED FROM THE GROUP CONSISTING OF CA++, MG++, ZN++, SR++, CD++, CU++, NI++, MN++, CO++, FE+++, NH4+, PB++, CE+++, CS+, UO2++, LI+ AND TH4+ AND THEN ADDING TO SAID DISPERSION, IN AN AMOUNT SUFFICEINT TO COAGULATE SAID DISPERSION, A COAGULATING SOLUTION CONSISTING OF A SOLUTION OF AN ELECTROLYTE IN WATER, THE AMOUNT OF WATER IN SAID COAGULATING SOLUTION BEING SUFFICIENT TO PRODUCE A GEL CONTAINING FROM 50% 98% BY VOLUME OF WATER.
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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |