US3704146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic whiteware compositions comprising a borate flux
Assignee: US Borax Inc
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Filing: 1969-12-02
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Granted: 1972-11-28
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Expires: 1989-12-02
Abstract
Abstract FLUX FOR CERAMIC COMPOSITIONS HAVING 30-60% B2O3, 20-60% SIO2, 5-30% CAO AND/OR MGO AND 0-15% NA2O.
Inventors
- 👤 Joseph Dulat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:12
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C03; C03C; C03C8/00; C03C8/02
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |