US2876121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zirconia rods for coating articles by flame spraying
Assignee: Saint Gobain Abrasives Inc
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Filing: 1956-12-06
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Granted: 1959-03-03
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Expires: 1976-12-06
Abstract
No abstract record available.
Inventors
- 👤 Neil N Ault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:14
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/48; C04B35/50; C04B35/66; C23; C23C; C23C24/00; C23C4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A SINTERED ZIRCONIA ROD FOR FLAME SPRAYING TO COAT ARTICLES WITH ZIRCONIA WHOSE COMPOSITION IS ZIRCONIA, THE MAJORITY OF THE CRYSTALS OF WHICH ARE CRYSTALS SELECTED FROM THE GROUP CONSISTING OF CUBIC CRYSTALS AND TETRAGONAL CRYSTALS, HAVING A POROSITY OF FROM 8% TO 40% OF OPEN AND INTERCONNECTING PORES, HAVING A MODULUS OF RUPTURE OF MORE THAN 2,000 POUNDS PER SQUARE INCH, SAID ZIRCONIA APART FROM ITS HAFNIA CONTENT AND APART FROM ITS STABILIZING OXIDE CONTENT BEING AT LEAST 96% PURE ZIRCONIA, SAID ROD CONTAINING PORES OF WHICH MORE THAN 50 VOLUME PERCENT ARE MORE THAN 20 MICRONS IN DIAMETER, SAID ROD HAVING BEEN MADE OUT OF STABILIZED ZIRCONIA PARTICLES THIRTY PERCENT BY WEIGHT OF WHICH ARE COARSER THAN 100 MICRONS AND SAID ROD HAVING BEEN MADE OUT OF ZIRCONIA PARTICLES SUBSTANTIALLY ALL OF WHICH ARE FINER THAN 500 MICRONS.
Claim 2
Dependent Claim
140 words
A SINTERED ZIRCONIA ROD FOR FLAME SPRAYING TO COAT ARTICLES WITH ZIRCONIA WHOSE COMPOSITION IS ZIRCONIA, THE MAJORITY OF THE CRYSTALS OF WHICH ARE CRYSTALS SELECTED FROM THE GROUP CONSISTING OF CUBIC CRYSTALS AND TETRAGONAL CRYSTALS, HAVING A POROSITY OF FROM 8% TO 40% OF OPEN AND INTERCONNECTING PORES, HAVING A MODULUS OF RUPTURE OF MORE THAN 2,000 POUNDS PER SQUARE INCH, SAID ZIRCONIA APART FROM ITS HAFNIA CONTENT AND APART FROM ITS STABILIZING OXIDE CONTENT BEING AT LEAST 96% PURE ZIRCONIA, SAID ROD CONTAINING PORES OF WHICH MORE THAN 50 VOLUME PERCENT ARE MORE THAN 20 MICRONS IN DIAMETER, SAID ROD HAVING BEEN MADE OUT OF STABILIZED ZIRCONIA PARTICLES THIRTY PERCENT BY WEIGHT OF WHICH ARE COARSER THAN 100 MICRONS AND SAID ROD HAVING BEEN MADE OUT OF ZIRCONIA PARTICLES SUBSTANTIALLY ALL OF WHICH ARE FINER THAN 500 MICRONS.
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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |