US3159480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Austenitic chromium-nickel stainless steels resistant to stress-corrosion cracking
Assignee: Huntington Alloys Corp
•
Filing: 1962-11-28
•
Granted: 1964-12-01
•
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
2026-11-06 10:09
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 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 ABOUT 30% NICKEL, ABOUT 16% TO ABOUT 25% CHROMIUM, ABOUT 1.9% TO ABOUT 2.5% SILICON, CARBON IN AN AMOUNT UP TO 0.03%, PHOSPHORUS IN AN AMOUNT UP TO NOT MORE THAN 0.015%, NITROGEN IN AN AMOUNT UP TO 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
86 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 ABOUT 30% NICKEL, ABOUT 16% TO ABOUT 25% CHROMIUM, ABOUT 1.9% TO ABOUT 2.5% SILICON, CARBON IN AN AMOUNT UP TO 0.03%, PHOSPHORUS IN AN AMOUNT UP TO NOT MORE THAN 0.015%, NITROGEN IN AN AMOUNT UP TO 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)
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) | 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 |