US2687955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold-workable stainless steel and articles
Assignee: Armco Inc
•
Filing: 1951-11-05
•
Granted: 1954-08-31
•
Expires: 1971-11-05
Abstract
No abstract record available.
Inventors
- 👤 Fredrick K Bloom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:37
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A STAINLESS STEEL POSSESSING COLD-WORKING AND MACHINING PROPERTIES COMPRISING UP TO 0.15% CARBON, UP TO 15% MANGANESE, FROM 10% TO 25% CHROMIUM, FROM 7% TO 20% NICKEL, FROM 1.0% TO 6.0% COPPER, FROM INCIDENTAL AMOUNTS UP TO 0.4% OF THE GROUP SULFUR, PHOSPHORUS AND SELENIUM, WITH REMAINDER IRON.
Claim 2
Dependent Claim
48 words
A STAINLESS STEEL POSSESSING COLD-WORKING AND MACHINING PROPERTIES COMPRISING UP TO 0.15% CARBON, UP TO 15% MANGANESE, FROM 10% TO 25% CHROMIUM, FROM 7% TO 20% NICKEL, FROM 1.0% TO 6.0% COPPER, FROM INCIDENTAL AMOUNTS UP TO 0.4% OF THE GROUP SULFUR, PHOSPHORUS AND SELENIUM, WITH REMAINDER IRON.
References Cited (Backward Citations)
GB437592A
Cited
US2523000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |