Patent FR1109751A successfully refreshed from Google Patents.
Patent US3271323A successfully refreshed from Google Patents.
US3271323A
Expired / Lapsed
US
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Silicate minerals having increased surface area and absorption properties and methodof preparation thereof
Assignee: Saint Gobain Abrasives Inc
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Filing: 1961-04-03
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Granted: 1966-09-06
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Expires: 1981-04-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Osgood J Whittemore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:03
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD FOR THE PRODUCTION OF HIGH SURFACE AREA CERAMICS WHICH COMPRISES MIXING TOGETHER A SILICATE MINERAL WITH A BORON COMPOUND SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, BORIC OXIDE, CALCIUM BORATE, AND SODIUM TETRABORATE, FIRING THE MIXTURE AT A TEMPERATURE OF FROM 600*C. TO A TEMPERATURE BELOW THAT OF COMPLETE FUSION OF THE COMPOSITION AND FORM FROM ABOUT 1 TO 60 HOURS, AND LEACHING THE FIRED PRODUCT TO SUBSTANTIALLY REMOVE ANY WATER SOLUBLE RESIDUE, WHEREBY THE ABSORPTION AND SURFACE AREA OF THE SILICATE MINERAL ARE SUBSTANTIALLY INCREASED.
Claim 2
Independent Claim
89 words
A METHOD FOR THE PRODUCTION OF HIGH SURFACE AREA CERAMICS WHICH COMPRISES MIXING TOGETHER A SILICATE MINERAL WITH A BORON COMPOUND SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, BORIC OXIDE, CALCIUM BORATE, AND SODIUM TETRABORATE, FIRING THE MIXTURE AT A TEMPERATURE OF FROM 600*C. TO A TEMPERATURE BELOW THAT OF COMPLETE FUSION OF THE COMPOSITION AND FORM FROM ABOUT 1 TO 60 HOURS, AND LEACHING THE FIRED PRODUCT TO SUBSTANTIALLY REMOVE ANY WATER SOLUBLE RESIDUE, WHEREBY THE ABSORPTION AND SURFACE AREA OF THE SILICATE MINERAL ARE SUBSTANTIALLY INCREASED.
References Cited (Backward Citations)
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Cited
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US2339302A
Cited
US2551580A
Cited
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Cited
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |