US3707385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing flame and fire resistant compositions containing siliceous materials
Assignee: Wasag Chemie AG
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Filing: 1971-04-02
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Granted: 1972-12-26
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Expires: 1991-04-02
Abstract
Abstract A METHOD FOR PRODUCING COATING COMPOSITIONS HAVING FIREPROOFING AGENTS AND PAINT BINDERS IS ACCOMPLISHED BY FORMING A SOLUTION CONTAINING ALKALI METAL SILICATE, INORGANIC FIBROUS SILICATE, OR FINELY POWDERED SILICATE, AND WATER, AND HEATING THE SOLUTION TO DRIVE OFF THE FREE WATER PHASE AND FORMING A DRIED MIXTURE COMPRISING A FIREPROOFING AGENT. A FOAMING AGENT MAY ALSO BE ADDED TO THE SOLUTION. THE FIREPROOFING AGENTS ARE PREFERABLY COMMINUTED TO A SIZE BELOW 1 MM., PREFERABLY BETWEEN 1 AND 50U AND ARE THEN MIXED AS A FILLER WITH PAINT AND MORTAR BINDERS.
Inventors
- 👤 Stefan Kraemer
- 👤 Alois Seidl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:25
CPC Classifications
C; C09; C09D; C09D1/00; C09D1/02; C09D1/04; A; A62; A62D; A62D1/00; C09D5/00; C09D5/18; C09D5/185; C09K; C09K21/00; C09K21/02
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |