US2875075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrous calcium silicates
Assignee: Owens Corning
•
Filing: 1955-08-08
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Granted: 1959-02-24
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Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 George L Kalousek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:07
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/18; C04B2111/00; C04B2111/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF MAKING AN INTREGATED HYDROUS CALCIUM SILICATE PRODUCT WHICH COMPRISES FORMING A MIXTURE COMPRISING REACTIVE LIME, REACTIVE SILICA, CALCIUM CHLORIDE CLAY AND WATER, THE RATIO OF WATER TO SOLIDS RANGING FROM 2:1 TO 8:1, THE RATIO OF REACTIVE LIME TO REACTIVE SILICA RANGING FROM 7:1 TO 1:1, THE SILICA OF THE CLAY BEING CALCULATED AS A PART OF THE TOTAL SILICIA, THE AMOUNT OF CALCIUM CHLORIDE BEING A MAXIMUM OF 10% BASED ON THE TOTAL WEIGHT OF REACTIVE SOLIDS, AND THE AMOUNT OF CLAY RANGING BETWEEN 1% AND 20% BASED ONTHE TOTAL WEIGHT OF REACTIVE SOLIDS AND INDURATING SAID MIXTURE AT A MINIMUM TEMPERATURE AND PRESSURE OF 401* F. AND 250 P. S. I. A. TO FORM AN INTEGRAGED HYDROUS CALCIUM SILICATE PRODUCT.
Claim 2
Independent Claim
125 words
THE METHOD OF MAKING AN INTREGATED HYDROUS CALCIUM SILICATE PRODUCT WHICH COMPRISES FORMING A MIXTURE COMPRISING REACTIVE LIME, REACTIVE SILICA, CALCIUM CHLORIDE CLAY AND WATER, THE RATIO OF WATER TO SOLIDS RANGING FROM 2:1 TO 8:1, THE RATIO OF REACTIVE LIME TO REACTIVE SILICA RANGING FROM 7:1 TO 1:1, THE SILICA OF THE CLAY BEING CALCULATED AS A PART OF THE TOTAL SILICIA, THE AMOUNT OF CALCIUM CHLORIDE BEING A MAXIMUM OF 10% BASED ON THE TOTAL WEIGHT OF REACTIVE SOLIDS, AND THE AMOUNT OF CLAY RANGING BETWEEN 1% AND 20% BASED ONTHE TOTAL WEIGHT OF REACTIVE SOLIDS AND INDURATING SAID MIXTURE AT A MINIMUM TEMPERATURE AND PRESSURE OF 401* F. AND 250 P. S. I. A. TO FORM AN INTEGRAGED HYDROUS CALCIUM SILICATE PRODUCT.
References Cited (Backward Citations)
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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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |