US3223758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of linings for metallurgical furnaces
Assignee: Max-Planck-Institut für Nachhaltige Materialien GmbH
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Filing: 1962-07-26
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Granted: 1965-12-14
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Expires: 1982-07-26
Abstract
No abstract record available.
Inventors
- 👤 Fischer Wilhelm Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:52
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/16; C; C04; C04B; C04B35/00; C04B35/01; C04B35/03; C04B35/057; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/44; F27D1/0003; F27D1/0006; F27D1/1621
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |