US2862828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot strength corrosion resistant material and production thereof
Assignee: Borolite Corp
•
Filing: 1955-11-14
•
Granted: 1958-12-02
•
Expires: 1975-11-14
Abstract
No abstract record available.
Inventors
- 👤 Frank W Glaser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:07
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/5805; C04B35/58064; C04B35/58071; C04B35/58078; C04B35/622; C04B35/626; C04B35/63; C04B35/6303; C04B35/64; C04B35/645
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A HARD HOMOGENEOUS SOLID BODY OF HIGH STRENGTH AND CORROSION RESISTANCE AT HIGH TEMPERATURES, CONSISTING ESSENTIALLY OF ABOUT 93% TO ABOUT 98% OF REFRACTORY DIBORIDE PARTICLES SELECTED FROM THE GROUP CONSISTING OF THE DIBORIDES OF ZIRCONIUM, TITANIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, AND SOLID SOLUTIONS OF AT LEAST TWO OF SAID DIBORIDES, AND ABOUT 2% TO ABOUT 7% OF A BORON SUBSTANCE BONDING TOGETHER SAID REFRACTORY PARTICLES, SAID BORON SUBSTANCE BEING BORON IN SOLID SOLUTION WITH 4 TO 33 ATOMIC PERCENT CARBON AND IN THE LIQUID STATE AT A TEMPERATURE OF LESS THAN 2700*C., SAID HARD BODY BEING FREE OF UNCOMBINED CARBON IN EXCESS OF 1.5% OF SAID BODY, SAID BODY HAVING BEEN FORMED BY SUBJECTING ITS CONSTITUENTS TO MECHANICAL PRESSURE AND A TEMPERATURE BETWEEN 1400*C. AND 2700*C.
Claim 2
Dependent Claim
127 words
A HARD HOMOGENEOUS SOLID BODY OF HIGH STRENGTH AND CORROSION RESISTANCE AT HIGH TEMPERATURES, CONSISTING ESSENTIALLY OF ABOUT 93% TO ABOUT 98% OF REFRACTORY DIBORIDE PARTICLES SELECTED FROM THE GROUP CONSISTING OF THE DIBORIDES OF ZIRCONIUM, TITANIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, AND SOLID SOLUTIONS OF AT LEAST TWO OF SAID DIBORIDES, AND ABOUT 2% TO ABOUT 7% OF A BORON SUBSTANCE BONDING TOGETHER SAID REFRACTORY PARTICLES, SAID BORON SUBSTANCE BEING BORON IN SOLID SOLUTION WITH 4 TO 33 ATOMIC PERCENT CARBON AND IN THE LIQUID STATE AT A TEMPERATURE OF LESS THAN 2700*C., SAID HARD BODY BEING FREE OF UNCOMBINED CARBON IN EXCESS OF 1.5% OF SAID BODY, SAID BODY HAVING BEEN FORMED BY SUBJECTING ITS CONSTITUENTS TO MECHANICAL PRESSURE AND A TEMPERATURE BETWEEN 1400*C. AND 2700*C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |