US2977225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature alloys
Assignee: Union Carbide Corp
•
Filing: 1959-02-25
•
Granted: 1961-03-28
•
Expires: 1979-02-25
Abstract
No abstract record available.
Inventors
- 👤 Stanley T Wlodek
- 👤 Geiselman Doyle
- 👤 Richard L Reddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:25
CPC Classifications
C; C22; C22C; C22C30/00; C22C14/00; C22C16/00; C22C27/00; C22C27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AN OXIDATION RESISTANT ALLOY FOR USE AT HIGH TEMPERATURES CONSISTING ESSENTIALLY OF AT LEAST 45 PERCENT BY WEIGHT TUNGSTEN, FROM 5 TO 45 PERCENT BY WEIGHT CHROMIUM, FROM 0.5 TO 12.0 PERCENT BY WEIGHT ALUMINUM, UP TO 49.5 PERCENT BY WEIGHT IN THE AGGREGATE OF AT LEAST ONE MODIFYING METAL SELECTED FROM THE GROUP CONSISTING OF TANTALUM, TITANIUM, VANADIUM, MOLYBDENUM, ZIRCONIUM AND HAFNIUM, UP TO 40 PERCENT BY WEIGHT IN THE AGGREGATE OF AT LEAST ONE MODIFYING METAL SELECTED FROM THE GROUP CONSISTING OF IRON, NICKEL, COBALT AND MANGANESE, UP TO 5 PERCENT BY WEIGHT IN THE AGGREGATE OF AT LEAST ONE MODIFYING METAL SELECTED FROM THE GROUP CONSISTING OF THE RARE EARTH METALS, YTTRIUM, SCANDIUM, CALCIUM, SILICON AND MAGNESIUM, THE MAXIMUM AMOUNT OF SAID MODIFYING METALS BEING NOT MORE THAN 49.5 PERCENT BY WEIGHT.
Claim 2
Dependent Claim
135 words
AN OXIDATION RESISTANT ALLOY FOR USE AT HIGH TEMPERATURES CONSISTING ESSENTIALLY OF AT LEAST 45 PERCENT BY WEIGHT TUNGSTEN, FROM 5 TO 45 PERCENT BY WEIGHT CHROMIUM, FROM 0.5 TO 12.0 PERCENT BY WEIGHT ALUMINUM, UP TO 49.5 PERCENT BY WEIGHT IN THE AGGREGATE OF AT LEAST ONE MODIFYING METAL SELECTED FROM THE GROUP CONSISTING OF TANTALUM, TITANIUM, VANADIUM, MOLYBDENUM, ZIRCONIUM AND HAFNIUM, UP TO 40 PERCENT BY WEIGHT IN THE AGGREGATE OF AT LEAST ONE MODIFYING METAL SELECTED FROM THE GROUP CONSISTING OF IRON, NICKEL, COBALT AND MANGANESE, UP TO 5 PERCENT BY WEIGHT IN THE AGGREGATE OF AT LEAST ONE MODIFYING METAL SELECTED FROM THE GROUP CONSISTING OF THE RARE EARTH METALS, YTTRIUM, SCANDIUM, CALCIUM, SILICON AND MAGNESIUM, THE MAXIMUM AMOUNT OF SAID MODIFYING METALS BEING NOT MORE THAN 49.5 PERCENT BY WEIGHT.
References Cited (Backward Citations)
US2783530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |