US3758317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monolithic inorganic structures
Assignee: EIDP Inc
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Filing: 1971-05-20
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Granted: 1973-09-11
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Expires: 1991-05-20
Abstract
Abstract MONOLITHIC INORGAIC STRUCTURES OF POSITIVELY CHARGED COLLODIAL PARTICLES AND NEGATIVELY CHARGED COLLODIAL SILICA PARTICLES ARE FORMED BY COMBINING A NEGATIVELY CHARGED COLLODIAL SILICA DISPERSION AND A POSITIVELY CHARGED COLLOIDAL DISPERSION.
Inventors
- 👤 E Moore
- 👤 D Sowards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:55
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315; B; B22; B22C; B22C1/00; B22C1/16; B22C1/18; B22C1/183; C04B28/00; C04B28/24; C04B40/00
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |