US2970038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation for the production of alkali metal silicates
Assignee: Diamond Shamrock Corp
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Filing: 1957-11-08
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Granted: 1961-01-31
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Expires: 1977-11-08
Abstract
No abstract record available.
Inventors
- 👤 John P Hyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:05
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN THE MANUFACTURE OF SOLID, HYDRATED ALKALI METAL SILICATES HAVING AN ALKALI METAL OXIDE:SIO2 MOLAR RATIO SUBSTANTIALLY WITHIN THE RANGE FROM ABOUT 1.75-2.25:1, FROM A MIXTURE OF AN AQUEOUS ALKALI METAL METASILICATE HYDRATE SOLUTION AND THE REQUIRED AMOUNT OF AN ALKALI METAL HYDROXIDE TO PROVIDE THE DESIRED ALKALI METAL OXIDE:SIO2 RATIO WITHIN SAID RANGE, BY COMBINING SAID ALKALI METAL HYDROXIDE AND ALKALI METAL METASILICATE AND AGITATING AND HEATING THE MIXTURE TO CAUSE THERMAL CRYSTALLIZATION OF SAID HYDRATED SILICATE, THE IMPROVEMENT WHICH INCLUDES THE STEPS OF ADDING TO SAID METASILICATE HYDATE SOLUTION AN AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXIDE, AGITATING THE MIXTURE OF SAID HYDRATE SOLUTION AND SAID ALKALI METAL HYDROXIDE SOLUTION IN A MIXER-PUMP
Claim 2
Dependent Claim
115 words
IN THE MANUFACTURE OF SOLID, HYDRATED ALKALI METAL SILICATES HAVING AN ALKALI METAL OXIDE:SIO2 MOLAR RATIO SUBSTANTIALLY WITHIN THE RANGE FROM ABOUT 1.75-2.25:1, FROM A MIXTURE OF AN AQUEOUS ALKALI METAL METASILICATE HYDRATE SOLUTION AND THE REQUIRED AMOUNT OF AN ALKALI METAL HYDROXIDE TO PROVIDE THE DESIRED ALKALI METAL OXIDE:SIO2 RATIO WITHIN SAID RANGE, BY COMBINING SAID ALKALI METAL HYDROXIDE AND ALKALI METAL METASILICATE AND AGITATING AND HEATING THE MIXTURE TO CAUSE THERMAL CRYSTALLIZATION OF SAID HYDRATED SILICATE, THE IMPROVEMENT WHICH INCLUDES THE STEPS OF ADDING TO SAID METASILICATE HYDATE SOLUTION AN AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXIDE, AGITATING THE MIXTURE OF SAID HYDRATE SOLUTION AND SAID ALKALI METAL HYDROXIDE SOLUTION IN A MIXER-PUMP
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) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |