US3712941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly siliceous alkali metal silicates
Assignee: OCCIDENTIAL ELECTROCHEMICALS Corp
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Filing: 1970-12-21
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Granted: 1973-01-23
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Expires: 1990-12-21
Abstract
Abstract A PROCESS IS DESCRIBED WHEREBY ALKALI METAL SILICATES HAVING SILICA : ALKALI METAL OXIDE WEIGHT RATIOS OF AT LEAST 4.0:1 ARE PROVIDED BY MIXING AN AQUEOUS ALKALI METAL SILICATE WITH AN AMORPHOUS SILICA AND REACTING THE RESULTANT MIXTURE AT A TEMPERATURE BETWEEN ABOUT ROOM TEMPERATURE AND AT LEAST THHE TEMPERATURE AT WHICH INTUMESCENCE OCCURS. BY THIS METHOD HIGH RATIO ALKALI METAL SILICATES OF VARYING DEGREES OF PLASTICITY AND WATER SOLUBILITY MAY BE OBTAINED.
Inventors
- 👤 C Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:05
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |