US2590074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stainless steel process and product
Assignee: Armco Inc
•
Filing: 1948-12-28
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Granted: 1952-03-25
•
Expires: 1968-12-28
Abstract
No abstract record available.
Inventors
- 👤 Bloom Fredrick Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:12
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/78; G; G11; G11B; G11B5/00; G11B5/62; G11B5/64; G11B5/65; G11B5/657; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928; Y10S72/00; Y10S72/70; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A METHOD FOR PRODUCING MAGNETIC SOUND RECORDING STEEL PRODUCTS, THE ART WHICH INCLUDES PROVIDING STAINLESS STEEL WIRE, TAPE OR THE LIKE OF ABOUT 0.02 INCH THICKNESS AND IN WHICH THERE ARE CORRELATED ABOUT 0.02% TO 0.20% TO CARBON, 16% TO 20% CHROMIUM, 6% TO 15% NICKLE, 0.20% TO 2.5% MANGANESE AND THE REMAINDER SUBSTANTIALLY ALL IRON IN RELATIONSHIP SUBSTANTIALLY CONSISTENT WITH THE FORMULA:
Claim 2
Dependent Claim
64 words
IN A METHOD FOR PRODUCING MAGNETIC SOUND RECORDING STEEL PRODUCTS, THE ART WHICH INCLUDES PROVIDING STAINLESS STEEL WIRE, TAPE OR THE LIKE OF ABOUT 0.02 INCH THICKNESS AND IN WHICH THERE ARE CORRELATED ABOUT 0.02% TO 0.20% TO CARBON, 16% TO 20% CHROMIUM, 6% TO 15% NICKLE, 0.20% TO 2.5% MANGANESE AND THE REMAINDER SUBSTANTIALLY ALL IRON IN RELATIONSHIP SUBSTANTIALLY CONSISTENT WITH THE FORMULA:
References Cited (Backward Citations)
FR875148A
Cited
US2489520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |