Nickel base alloy
Abstract
Abstract A NICKEL BASE ALLOY CONSISTING ESSENTIALLY OF, IN WEIGHT PERCENT, UP TO 0.18% CARBON, FROM 14.2 TO 20% COBALT, FROM 13.7 TO 16% CHROMIUM, FROM 3.8 TO 5.5% MOLYBDENUM, FROM 2.75 TO 3.75% TITANIUM, FROM 3.75 TO 4.75% ALUMINUM, UP TO 4% IRON, FROM 0.005 TO 0.035% BORON, UP TO 0.5% ZIRCONIUM, UP TO 0.5% HAFNIUM, UP TO 0.75% COLUMBIUM, UP TO 0.5% RHENIUM, UP TO 0.75% TANTALUM, UP TO 1.0% MANGANESE, UP TO 3.0% TUNGSTEN, UP TO 0.5% RARE EARTH METALS, BALANCE ESSENTIALLY NICKEL WITH INCIDENTAL IMPURITIES, AND HAVING AN AVERAGE GRAIN SIZE COARSER TAN ASTM NO. 4 AND A MORPHOLOGY COMPRISED OF GAMMA PRIME PARTICLES WHICH CONSISTS ESSENTIALLY OF RANDOMLY DISPERSED IRREGULARLY SHAPED PARTILES LESS THAN ABOUT 0.35 MICRONS IN DIAMETER.
Inventors
- 👤 W Boesch
Bibliographic Details
Claims Analysis
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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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |