US2857266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature resistant alloys
Assignee: Duraloy Co
•
Filing: 1958-02-26
•
Granted: 1958-10-21
•
Expires: 1978-02-26
Abstract
No abstract record available.
Inventors
- 👤 Earl M Anger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:20
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A NICKEL CHROME IRON ALLOY HAVING AN TENSILE STRENGTH ABOVE ABOUT 6000 POUNDS PER SQUARE INCH AT 2300*F., AN AIR OXYGEN RESISTANCE OF LESS THAN ABOUT .015 INCH PER YEAR AT 2200*F., A RUPTURE STRENGTH OF ABOVE ABOUT 200 POUNDS PER SQUARE INCH IN 100 HOURS AT 2300*F., A CREEP RATE OF LESS THAN ABOUT 1% WHEN SUBJECTED TO ABOUT 70 POUNDS PER SQUARE INCH AT 2200*F. FOR 1000 HOURS, AND CONSISTING ESSENTIALLY OF BETWEEN ABOUT 45% AND ABOUT .55% OF CARBON, BETWEEN ABOUT 23% AND ABOUT 27% OF CHROMIUM, BETWEEN ABOUT 34% AND ABOUT 37% OF NICKEL, BETWEEN ABOUT 1% AND ABOUT 2% OF MOLYBDENIUM, BETWEEN ABOUT 1% AND ABOUT 2.5% OF SILICON BETWEEN ABOUT 1% AND ABOUT 4% OF MANGANESE, BETWEEN ABOUT .05% AND ABOUT .40% OF ALUMINUM, BETWEEN ABOUT .15% AND ABOUT .40% OF NITROGEN, BETWEEN ABOUT .001% AND ABOUT .04% OF BORON, THE REMAINDER BEING IRON WITH NOT MORE THAN ABOUT .04% OF EACH OF SULPHUR AND PHOSPHOROUS.
Claim 2
Dependent Claim
162 words
A NICKEL CHROME IRON ALLOY HAVING AN TENSILE STRENGTH ABOVE ABOUT 6000 POUNDS PER SQUARE INCH AT 2300*F., AN AIR OXYGEN RESISTANCE OF LESS THAN ABOUT .015 INCH PER YEAR AT 2200*F., A RUPTURE STRENGTH OF ABOVE ABOUT 200 POUNDS PER SQUARE INCH IN 100 HOURS AT 2300*F., A CREEP RATE OF LESS THAN ABOUT 1% WHEN SUBJECTED TO ABOUT 70 POUNDS PER SQUARE INCH AT 2200*F. FOR 1000 HOURS, AND CONSISTING ESSENTIALLY OF BETWEEN ABOUT 45% AND ABOUT .55% OF CARBON, BETWEEN ABOUT 23% AND ABOUT 27% OF CHROMIUM, BETWEEN ABOUT 34% AND ABOUT 37% OF NICKEL, BETWEEN ABOUT 1% AND ABOUT 2% OF MOLYBDENIUM, BETWEEN ABOUT 1% AND ABOUT 2.5% OF SILICON BETWEEN ABOUT 1% AND ABOUT 4% OF MANGANESE, BETWEEN ABOUT .05% AND ABOUT .40% OF ALUMINUM, BETWEEN ABOUT .15% AND ABOUT .40% OF NITROGEN, BETWEEN ABOUT .001% AND ABOUT .04% OF BORON, THE REMAINDER BEING IRON WITH NOT MORE THAN ABOUT .04% OF EACH OF SULPHUR AND PHOSPHOROUS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |