US2839392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant alloy
Assignee: EIDP Inc
•
Filing: 1955-07-28
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Granted: 1958-06-17
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Expires: 1975-07-28
Abstract
No abstract record available.
Inventors
- 👤 Michael A Streicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:24
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/001; C22C38/18; C22C38/40; C22C38/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
A PIT CORROSON RESISTANT STAINLESS STEEL COMPRISING FROM ABOUT 16% TO ABOUT 20% OF CHROMIUM; ABOUT 8% TO ABOUT 14% NICKEL; ABOUT 1.5% TO ABOUT 4.0% MOLYBDENUM; ABOUT 1.5% TO ABOUT 4.0% SILICON; ABOUT 0.1% TO ABOUT 0.3% NITROGEN; CARBON BELOW ABOUT 0.08%; THE BALANCE BEING SUBSTANTIALLY IRON.
References Cited (Backward Citations)
US2185987A
Cited
US2229065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |