US2728128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing boron carbide articles and product thereof
Assignee: Individual
•
Filing: 1951-11-29
•
Granted: 1955-12-27
•
Expires: 1971-11-29
Abstract
No abstract record available.
Inventors
- 👤 Sheer Charles
- 👤 Tittman Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:02
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/563; G; G21; G21F; G21F1/00; G21F1/02; G21F1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE METHOD OF MAKING SHAPED ARTICLES FROM BORON CARBIDE WHICH COMPRISES COLD MOLDING A PLASTIC MIXTURE OF FINELY DIVIDED BORON CARBIDE AND WATER, THEREAFTER HEATING THE MOLDED MIXTURE WITHOUT PREVIOUS DRYING IN AN ATMOSPHERE CONTAINING OXYGEN AT A TEMPERATURE IN THE RANGE 600* C. TO 100* C. TO CONVERT A MINOR PORTION OF THE BORON CARBIDE TO BORON OXIDE AND TO MELT THE BORON OXIDE AND COOLING THE HEATED MIXTURE.
Claim 2
Independent Claim
70 words
THE METHOD OF MAKING SHAPED ARTICLES FROM BORON CARBIDE WHICH COMPRISES COLD MOLDING A PLASTIC MIXTURE OF FINELY DIVIDED BORON CARBIDE AND WATER, THEREAFTER HEATING THE MOLDED MIXTURE WITHOUT PREVIOUS DRYING IN AN ATMOSPHERE CONTAINING OXYGEN AT A TEMPERATURE IN THE RANGE 600* C. TO 100* C. TO CONVERT A MINOR PORTION OF THE BORON CARBIDE TO BORON OXIDE AND TO MELT THE BORON OXIDE AND COOLING THE HEATED MIXTURE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |