US3192041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant steels
Assignee: Crane Co
•
Filing: 1962-12-13
•
Granted: 1965-06-29
•
Expires: 1982-12-13
Abstract
No abstract record available.
Inventors
- 👤 Jerome J Kanter
- 👤 Alvin F Lahr
- 👤 Haefner Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:34
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/001; C22C38/18; C22C38/40; C22C38/58
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
IN A PROCESS FOR MANUFACTURING SHAPED METAL CASTING THE STEPS WHICH COMPRISE: PREPARING AN AUSTENITIC FERROUS BASE METAL ALLOY STEEL MELT CONSISTING ESSENTIALLY OF FROM ABOUT 18% TO ABOUT 21% BY WEIGHT OF CHROMIUM, 6% TO ABOUT 12% BY WEIGHT OF MANGANESE, FROM ABOUT 2% TO ABOUT 8% BY WEIGHT NICKEL, FROM ABOUT 0.02% TO ABOUT 0.5% BY WEIGHT OF NITROGEN, WITH THE MAXIMUM NITROGEN AND THE BALANCE ESSENTIALLY IRON IS LESS THAN APPROXIMATELY THE FOLLOWING IN THE RANGE OF COMBINED PERCENTAGES BY WEIGHT OF MANGANESE PLUS NICKEL FROM ABOUT 4% TO ABOUT 18%:
References Cited (Backward Citations)
US1990590A
Cited
US2903386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |