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Patent US3249401A successfully refreshed from Google Patents.
US3249401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of titanium diboride
Assignee: US Borax Inc
•
Filing: 1962-05-10
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Granted: 1966-05-03
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Expires: 1982-05-10
Abstract
No abstract record available.
Inventors
- 👤 Wood Anthony Arthur Robinson
- 👤 Timms Peter Leslie
- 👤 Bull George Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:08
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/02; C01B35/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
IN THE PROCESS FOR PRODUCING TITANIUM DIBORIDE BY HEATING AT A TEMPERATURE ABOVE 1350*C. A PREFORMED SLUG OF REACTANTS COMPRISING AN INTIMATE MIXTURE OF BORIC OXIDE, CARBON AND TITANIUM DIOXIDE, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS SAID SLUG A TUBBULAR SLUG HAVING A LONGITUDINAL BORE.
Claim 2
Dependent Claim
45 words
IN THE PROCESS FOR PRODUCING TITANIUM DIBORIDE BY HEATING AT A TEMPERATURE ABOVE 1350*C. A PREFORMED SLUG OF REACTANTS COMPRISING AN INTIMATE MIXTURE OF BORIC OXIDE, CARBON AND TITANIUM DIOXIDE, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS SAID SLUG A TUBBULAR SLUG HAVING A LONGITUDINAL BORE.
References Cited (Backward Citations)
US2792310A
Cited
US3019084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |