US3069238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making zirconium boride
Assignee: Unifrax I LLC
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Filing: 1960-03-21
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Granted: 1962-12-18
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Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 John C Mcmullen
- 👤 Jr William D Mckee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:05
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/02; C01B35/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
32 words
A METHOD OF MAKING ZIRCONIUM BORIDE WHICH COMPRISES PREPARING A RAW BATCH COMPRISING ZIRCON, CARBON AND A SOURCE OF AND CONTAINING BORIC OXIDE IN APPROXIMATELY THE STOICHIOMETRIC PROPORTIONS REQUIRED BY THE EQUATION:
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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |