US2964388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of zirconium boride
Assignee: NL Industries Inc
•
Filing: 1953-07-10
•
Granted: 1960-12-13
•
Expires: 1973-07-10
Abstract
No abstract record available.
Inventors
- 👤 Espenschied Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:48
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/02; C01B35/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
METHOD FOR THE PRODUCTION OF ZIRCONIUM BORIDE WHICH COMPRISES ADMIXING AN UNCALCINED ZIRCONIA HYDRATE PULP AS PRECIPITATED FROM A BASIC ZIRCONIA SALT SOLUTION IN AN AMOUNT EQUIVALENT TO 1 MOLE ON A ZIRCONIUM OXIDE BASIS, 5 MOLES OF CARBON, AND BORIC ACID IN AN AMOUNT EQUIVALENT TO 2 MOLES OF BORON OXIDE TO FORM A SLURRY, AGITATING THE SLURRY TO FORM AN INTIMATE MIXTURE OF THE HYDRATE, CARBON AND SAID OXIDIC COMPOUND OF BORON, DRYING THE MIXTURE, AND THEN HEATING THE DRIED MIXTURE IN AN INERT ATMOSPHERE TO A TEMPERATURE SUFFICIENTLY HIGH TO COMPLETE THE REACTION BETWEEN THE MATERIALS AND PRODUCE FINELY DIVIDED ZIRCONIUM BORIDE HAVING A PARTICLE SIZE FROM ABOUT 1 MICRON TO ABOUT 20 MICRONS.
Claim 2
Dependent Claim
117 words
METHOD FOR THE PRODUCTION OF ZIRCONIUM BORIDE WHICH COMPRISES ADMIXING AN UNCALCINED ZIRCONIA HYDRATE PULP AS PRECIPITATED FROM A BASIC ZIRCONIA SALT SOLUTION IN AN AMOUNT EQUIVALENT TO 1 MOLE ON A ZIRCONIUM OXIDE BASIS, 5 MOLES OF CARBON, AND BORIC ACID IN AN AMOUNT EQUIVALENT TO 2 MOLES OF BORON OXIDE TO FORM A SLURRY, AGITATING THE SLURRY TO FORM AN INTIMATE MIXTURE OF THE HYDRATE, CARBON AND SAID OXIDIC COMPOUND OF BORON, DRYING THE MIXTURE, AND THEN HEATING THE DRIED MIXTURE IN AN INERT ATMOSPHERE TO A TEMPERATURE SUFFICIENTLY HIGH TO COMPLETE THE REACTION BETWEEN THE MATERIALS AND PRODUCE FINELY DIVIDED ZIRCONIUM BORIDE HAVING A PARTICLE SIZE FROM ABOUT 1 MICRON TO ABOUT 20 MICRONS.
References Cited (Backward Citations)
US2630370A
Cited
US2872202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |