US3637775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soluble complex ion metal silicates
Assignee: EIDP Inc
•
Filing: 1969-05-08
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Granted: 1972-01-25
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Expires: 1989-05-08
Abstract
Abstract SILICATES PREPARED FROM (I) A METAL-CONTAINING CATION COORDINATED TO A POLYAMINE LIGAND AND (II) A SOURCE OF SILICA ARE USEFUL AS FILM-FORMING AGENTS.
Inventors
- 👤 Paul C Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:21
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/025
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |