Patent US5296919A successfully refreshed from Google Patents.
US3131072A
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Novel silica aerogels and processes for preparing same
Assignee: Monsanto Chemicals Ltd
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Filing: 1960-11-10
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Granted: 1964-04-28
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Expires: 1980-11-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Taulli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:50
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/157; C01B33/158; C01B33/1585
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN AMORPHOUS METAL-CONTAINING SILICA AEROGEL CONSISTING ESSENTIALLY OF A SILICA POLYMER HAVING SILOXY GROUPS AND CONTAINING AN ALKALINE EARTH METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM CHEMICALLY BOUND TO A PORTION OF SAID SILOXY GROUPS IN SAID AEROGEL, SAID AEROGEL BEING FURTHER CHARACTERIZED IN HAVING AN SIO2 TO M RATIO FROM ABOUT 5:1 TO ABOUT 66:1 WHEREIN M IS SAID ALKALINE EARTH METAL.
Claim 2
Dependent Claim
66 words
AN AMORPHOUS METAL-CONTAINING SILICA AEROGEL CONSISTING ESSENTIALLY OF A SILICA POLYMER HAVING SILOXY GROUPS AND CONTAINING AN ALKALINE EARTH METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM CHEMICALLY BOUND TO A PORTION OF SAID SILOXY GROUPS IN SAID AEROGEL, SAID AEROGEL BEING FURTHER CHARACTERIZED IN HAVING AN SIO2 TO M RATIO FROM ABOUT 5:1 TO ABOUT 66:1 WHEREIN M IS SAID ALKALINE EARTH METAL.
References Cited (Backward Citations)
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Cited
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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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |