Patent US3058834A successfully refreshed from Google Patents.
US3058834A
Expired / Lapsed
US
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Process of making basic refractory and basic refractory composition
Assignee: Individual
•
Filing: 1959-11-17
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Granted: 1962-10-16
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Expires: 1979-11-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph N Koehegyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:46
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/03; C04B35/057
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2952554A
Cited
US2245297A
Cited
US2076884A
Cited
US2231024A
Cited
US2537013A
Cited
US2876122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |