Patent US3159583A successfully refreshed from Google Patents.
US3159583A
Expired / Lapsed
US
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Preparation of thorium silicate hydrosols
Assignee: WR Grace and Co
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Filing: 1960-05-12
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Granted: 1964-12-01
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Expires: 1980-05-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick T Fitch
- 👤 Jean G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:31
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/42; G21C3/44; G21C3/46; G21C3/48; B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0008; B01J13/0013; B01J13/0047; C; C01; C01B; C01B33/00; C01B33/20; C01F; C01F15/00; C01F7/00; C01F7/02; C01F7/34; C01G; C01G43/00; C01G43/01; C01G43/025; C01P; C01P2006/00; C01P2006/10; C01P2006/32; C01P2006/37; C01P2006/40; C01P2006/80; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE METHOD OF PREPARING A THORIUM SILICATE SOL BY CONCURRENT HYDROLYSIS OF A SOLUTION OF A THORIUM SALT AND AN ORGANIC SILICATE COMPRISING THE STEPS OF PREPARING A SOLUTION OF A TETRAVALENT THORIUM SALT SELECTED FROM THE GROUP CONSISTING OF THORIUM NITRATE, THORIUM CHLORIDE AND THORIUM PERCHLORATE IN WATER, ADDING ALKOXY SILANES SELECTED FROM THOSE HAVING ALKOXY GROUPS SMALLER THAN BUTOXY IN AN AMOUNT ABOUT EQUAL TO THE NUMBER OF MOLES OF THORIUM SALT PRESENT TO THE SOLUTION, WITHDRAWING A PORTION OF SAID SOLUTION, DIALYZING SAID PORTION OF REMOVE ANIONS, RETURNING SAID PORTION TO A LARGER BODY OF SOLUTION MAINTAINED AT ABOUT 70 TO 150*C. AND CONTINUING SAID WITHDRAWAL, DIALYSIS AND ADDITION BACK UNTIL SAID BODY OF SOLUTION IS ESSENTIALLY ELECTROLYTE FREE AND RECOVERING THE PRODUCT THORITE SOL.
Claim 2
Independent Claim
128 words
THE METHOD OF PREPARING A THORIUM SILICATE SOL BY CONCURRENT HYDROLYSIS OF A SOLUTION OF A THORIUM SALT AND AN ORGANIC SILICATE COMPRISING THE STEPS OF PREPARING A SOLUTION OF A TETRAVALENT THORIUM SALT SELECTED FROM THE GROUP CONSISTING OF THORIUM NITRATE, THORIUM CHLORIDE AND THORIUM PERCHLORATE IN WATER, ADDING ALKOXY SILANES SELECTED FROM THOSE HAVING ALKOXY GROUPS SMALLER THAN BUTOXY IN AN AMOUNT ABOUT EQUAL TO THE NUMBER OF MOLES OF THORIUM SALT PRESENT TO THE SOLUTION, WITHDRAWING A PORTION OF SAID SOLUTION, DIALYZING SAID PORTION OF REMOVE ANIONS, RETURNING SAID PORTION TO A LARGER BODY OF SOLUTION MAINTAINED AT ABOUT 70 TO 150*C. AND CONTINUING SAID WITHDRAWAL, DIALYSIS AND ADDITION BACK UNTIL SAID BODY OF SOLUTION IS ESSENTIALLY ELECTROLYTE FREE AND RECOVERING THE PRODUCT THORITE SOL.
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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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |