US3095312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous foamed silicate products
Assignee: Individual
•
Filing: 1959-12-24
•
Granted: 1963-06-25
•
Expires: 1979-12-24
Abstract
No abstract record available.
Inventors
- 👤 Sidney T Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:22
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR PRODUCING A WATER-INSOLUBLE LIGHT RIGID POROUS RAPIDLY-FORMED PRODUCT HAVING A MULTICELLULAR STRUCTURE CONSISTING ESSENTIALLY OF MIXING TOGETHER IN A AQUEOUS MEDIUM AT AMBIENT TEMPERATURE ABOUT 1 TO 20, PARTS BY WEIGHT OF A GAS-PRODUCING PEROXY COMPOUND, ABOUT 30 TO 135 PARTS OF WATER-SOLUBLE INORGANIC SILICATE. AND ABOUT 1 TO 5 PARTS OF PARAFORMALDEHYE, WHILE MAINTAINING A SILICATE/ALDEHYDE WEIGHT RATIO BETWEEN ABOUT 1.26 TO ABOUT 2.4 (EXPRESSED AS NA2O/PARAFORMALDEHYDE).
Claim 2
Dependent Claim
71 words
A PROCESS FOR PRODUCING A WATER-INSOLUBLE LIGHT RIGID POROUS RAPIDLY-FORMED PRODUCT HAVING A MULTICELLULAR STRUCTURE CONSISTING ESSENTIALLY OF MIXING TOGETHER IN A AQUEOUS MEDIUM AT AMBIENT TEMPERATURE ABOUT 1 TO 20, PARTS BY WEIGHT OF A GAS-PRODUCING PEROXY COMPOUND, ABOUT 30 TO 135 PARTS OF WATER-SOLUBLE INORGANIC SILICATE. AND ABOUT 1 TO 5 PARTS OF PARAFORMALDEHYE, WHILE MAINTAINING A SILICATE/ALDEHYDE WEIGHT RATIO BETWEEN ABOUT 1.26 TO ABOUT 2.4 (EXPRESSED AS NA2O/PARAFORMALDEHYDE).
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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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |