Patent US2794863A successfully refreshed from Google Patents.
US3429851A
Expired / Lapsed
US
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Silicate resins
Assignee: Electric Reduction Company of Canada Ltd
•
Filing: 1966-11-21
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Granted: 1969-02-25
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Expires: 1986-11-21
Abstract
No abstract record available.
Inventors
- 👤 Harold Coates
- 👤 David Albert Brown
- 👤 Francis Michael Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:40
CPC Classifications
C; C08; C08G; C08G77/00; C08G16/00; C08G16/02; C08G16/0212; C08G16/0218; C08G77/60; C08G8/00; C08G8/04; C08G8/08; C08G8/20; C08L; C08L83/00; C08L83/16; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2721
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |