US2888355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron nitride-metal carbide bodies and the manufacture thereof
Assignee: Unifrax I LLC
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Filing: 1955-01-03
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Granted: 1959-05-26
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Expires: 1975-01-03
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:39
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/64; C04B35/645; C04B35/515; C04B35/56; C04B35/5607; C04B35/5626; C04B35/58; C04B35/583; C04B35/65
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
AS A NEW ARTICLE OF MANUFACTURE, A BODY CONSISTING ESSENTIALLY OF GRANULAR METAL CARBIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM CARBIDE, TUNGSTEN CARBIDE, ZIRCONIUM CARBIDE, CHORMIUM CARBIDE, MOLYBDENUM CARBIDE, COLUMBIUM CARBIDE, HAFNIUM CARBIDE, TANTALUM CARBIDE, THORIUM CARBIDE, AND MIXTURES THEREOF AND HOMOGENEOUSLY DISTRIBUTED THROUGHOUT A CONTINUOUS INTERSTITIAL MATRIX OF BORON NITRIDE, SAID BODY HAVING BEEN MADE BY HOT-PRESSING AN INTIMATE MIXTURE OF FINELY DIVIDED BORON NITRIDE AND REFRACTORY METAL CARBIDE AT A TEMPERATURE OF 1500* C. TO 2000* C. AND A PRESSURE OF AT LEAST 250 P.S.I.
Claim 2
Dependent Claim
88 words
AS A NEW ARTICLE OF MANUFACTURE, A BODY CONSISTING ESSENTIALLY OF GRANULAR METAL CARBIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM CARBIDE, TUNGSTEN CARBIDE, ZIRCONIUM CARBIDE, CHORMIUM CARBIDE, MOLYBDENUM CARBIDE, COLUMBIUM CARBIDE, HAFNIUM CARBIDE, TANTALUM CARBIDE, THORIUM CARBIDE, AND MIXTURES THEREOF AND HOMOGENEOUSLY DISTRIBUTED THROUGHOUT A CONTINUOUS INTERSTITIAL MATRIX OF BORON NITRIDE, SAID BODY HAVING BEEN MADE BY HOT-PRESSING AN INTIMATE MIXTURE OF FINELY DIVIDED BORON NITRIDE AND REFRACTORY METAL CARBIDE AT A TEMPERATURE OF 1500* C. TO 2000* C. AND A PRESSURE OF AT LEAST 250 P.S.I.
References Cited (Backward Citations)
US1991204A
Cited
GB478016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |