US3033648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrothermal process for the manufacture of hydrated calcium silicates
Assignee: Johns Manville Corp
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Filing: 1959-02-04
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Granted: 1962-05-08
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Expires: 1979-02-04
Abstract
No abstract record available.
Inventors
- 👤 Linden Carl R Vander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:10
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/24; C01B33/22; C04; C04B; C04B28/00; C04B28/18; Y; Y02; Y02P; Y02P40/00; Y02P40/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A METHOD OF INCREASING THE BULK DENSITY OF HYDROTHERMALLY PREPARED HYDRATED CALCIUM SILICATES WHICH COMPRISES EFFECTING INTIALS CONTACT OF SILICEOUS AND LIME REACANTS AT A TEMPERATURE OF AT LEAST 212*F. BY ADDIG AN AQUEOUS SUSPENSION OF REACTIVE SILICEOUS MATERIAL TO AN AQUEOUS SUSPENSION OF LIME, PROPORTIONING THE REACTANTS COMPRISING WATER AND SAID SUSPENSION OF REACTIVE SILICEOUS MATERIAL AND LIME TO PROVIDE A CAO/SIO2 MOL RATIO OF 0.1-2.0 AND A REACTION MEDIUM HAVING A WATER TO SOLIDS CONTENT TO ABOUT 8-50 PARTS BY WEIGHT OF WATER PER PART OF SOLIDS, MAINTAINING THE AQUEOUS SUSPENSION OF THE SILICEOUS AND LIME REACTANT AT A TEMPERATURE OF AT LEAST 212*F. FOR A REACTION PERIOD OF AT LEAST ABOUT 20 MINUTES TO EFFECT SUBSTANTIAL REACTION BETWEEN THE REACTIVE COMPONENTS TO FORM A HYDRATED CALCIUM SILICATE.
Claim 2
Independent Claim
130 words
A METHOD OF INCREASING THE BULK DENSITY OF HYDROTHERMALLY PREPARED HYDRATED CALCIUM SILICATES WHICH COMPRISES EFFECTING INTIALS CONTACT OF SILICEOUS AND LIME REACANTS AT A TEMPERATURE OF AT LEAST 212*F. BY ADDIG AN AQUEOUS SUSPENSION OF REACTIVE SILICEOUS MATERIAL TO AN AQUEOUS SUSPENSION OF LIME, PROPORTIONING THE REACTANTS COMPRISING WATER AND SAID SUSPENSION OF REACTIVE SILICEOUS MATERIAL AND LIME TO PROVIDE A CAO/SIO2 MOL RATIO OF 0.1-2.0 AND A REACTION MEDIUM HAVING A WATER TO SOLIDS CONTENT TO ABOUT 8-50 PARTS BY WEIGHT OF WATER PER PART OF SOLIDS, MAINTAINING THE AQUEOUS SUSPENSION OF THE SILICEOUS AND LIME REACTANT AT A TEMPERATURE OF AT LEAST 212*F. FOR A REACTION PERIOD OF AT LEAST ABOUT 20 MINUTES TO EFFECT SUBSTANTIAL REACTION BETWEEN THE REACTIVE COMPONENTS TO FORM A HYDRATED CALCIUM SILICATE.
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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |