US2647061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articles of calcium-carbon boride
Assignee: Saint Gobain Abrasives Inc
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Filing: 1951-06-21
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Granted: 1953-07-28
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Expires: 1971-06-21
Abstract
No abstract record available.
Inventors
- 👤 Edwin C Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:49
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/563; C04B35/622; C04B35/64; C04B35/645
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN ARTICLE OF MANUFACTURING ESSENTIALLY CONSISTING OF A MIXTURE CALCIUM BORIDE AND CARBON BORIDE, CONTAINING CAB6 AND CB4 WITH FROM 10% TO 40% BY VOLUME CAB6 ON THE TOTAL CAB6+CB4, WITH FROM 60% TO 90% BY VOLUME CB4 ON THE TOTAL CAB6+CB4, HAVING NOT MORE THAN 10% FREE BORON BY VOLUME HAVING NO GRAPHITE AND NOT MORE THAN 2% BY WEIGHT OF CARBON IN SOLID SOLUTION IN THE BORIDES, SAID ARTICLE HAVING BEEN MOLDED AT A TEMPERATURE OF AT LEAST 2000* C. AND AT A PRESSURE OF AT LEAST 1000 POUNDS PER SQUARE INCH AND HAVING A MODULUS OF RUPTURE IN CROSS BLENDING OF AT LEAST 43,000 POUNDS PER SQUARE INCH.
Claim 2
Dependent Claim
111 words
AN ARTICLE OF MANUFACTURING ESSENTIALLY CONSISTING OF A MIXTURE CALCIUM BORIDE AND CARBON BORIDE, CONTAINING CAB6 AND CB4 WITH FROM 10% TO 40% BY VOLUME CAB6 ON THE TOTAL CAB6+CB4, WITH FROM 60% TO 90% BY VOLUME CB4 ON THE TOTAL CAB6+CB4, HAVING NOT MORE THAN 10% FREE BORON BY VOLUME HAVING NO GRAPHITE AND NOT MORE THAN 2% BY WEIGHT OF CARBON IN SOLID SOLUTION IN THE BORIDES, SAID ARTICLE HAVING BEEN MOLDED AT A TEMPERATURE OF AT LEAST 2000* C. AND AT A PRESSURE OF AT LEAST 1000 POUNDS PER SQUARE INCH AND HAVING A MODULUS OF RUPTURE IN CROSS BLENDING OF AT LEAST 43,000 POUNDS PER SQUARE INCH.
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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |