US3159479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Austenitic chromium-nickel stainless steels resistant to stress-corrosion cracking
Assignee: Huntington Alloys Corp
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Filing: 1962-11-28
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Granted: 1964-12-01
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Expires: 1982-11-28
Abstract
No abstract record available.
Inventors
- 👤 Harry R Copson
- 👤 Frances S Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:00
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C19/00; C22C19/03; C22C19/05; C22C19/058
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AN AUSTENITIC CHROMIUM-NICKEL STAINLESS STEEL HIGHLY RESISTANT TO STRESS-CORROSION CRACKING WHEN SUBJECTED TO STRESS AND IN CONTACT WITH HALIDE SOLUTIONS, SAID STEEL CONSISTING ESSENTIALLY OF ABOUT 20% TO 30% NICKEL, ABOUT 16% TO ABOUT 25% CHROMIUM, AT LEAST 0.07% AND UP TO 0.09% CARBON, UP TO 1.5% SILICON, PHOSPHORUS IN AN AMOUNT UP TO NOT MORE THAN 0.015%, NITROGEN IN AN MOUNT UP TO NOT MORE THAN 0.035%, THE SUM OF THE PHOSPHORUS PLUS NITROGEN NOT EXCEEDING 0.045%, UP TO 0.7% MANGANESE AND THE BALANCE ESSENTIALLY IRON.
Claim 2
Dependent Claim
87 words
AN AUSTENITIC CHROMIUM-NICKEL STAINLESS STEEL HIGHLY RESISTANT TO STRESS-CORROSION CRACKING WHEN SUBJECTED TO STRESS AND IN CONTACT WITH HALIDE SOLUTIONS, SAID STEEL CONSISTING ESSENTIALLY OF ABOUT 20% TO 30% NICKEL, ABOUT 16% TO ABOUT 25% CHROMIUM, AT LEAST 0.07% AND UP TO 0.09% CARBON, UP TO 1.5% SILICON, PHOSPHORUS IN AN AMOUNT UP TO NOT MORE THAN 0.015%, NITROGEN IN AN MOUNT UP TO NOT MORE THAN 0.035%, THE SUM OF THE PHOSPHORUS PLUS NITROGEN NOT EXCEEDING 0.045%, UP TO 0.7% MANGANESE AND THE BALANCE ESSENTIALLY IRON.
References Cited (Backward Citations)
US3118761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |