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Patent US3582374A successfully refreshed from Google Patents.
US3582374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory mortar
Assignee: Dresser Industries Inc
•
Filing: 1968-06-03
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Granted: 1971-06-01
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Expires: 1988-06-03
Abstract
Abstract A REFRACTORY MORTAR COMPRISING FINELY DIVIDED ALUMINA, CHROMIC OXIDE AND TITANIA, AND PLASTICIZING AGENTS AND BINDERS.
Inventors
- 👤 Kermit Mark Bonar
- 👤 Frank H Walther
- 👤 Daniel E Reardon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:29
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/10
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |