US2553609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weldable and high-temperature resisting hard alloys of cobalt and iron base
Assignee: Individual
•
Filing: 1948-02-27
•
Granted: 1951-05-22
•
Expires: 1968-02-27
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:33
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
WELDABLE COBALT BEARING HARD ALLOYS OF HIGH STRENGTH AT ELEVATED TEMPERATURES CONTAINING 0.8% TO 3% CARBON 0.3% TO 3.5% SILICON 23% TO 32% CHROMIUM 2% TO 30% TUNGSTEN 3% TO 15% MOLYBDENUM THE BALANCE UP TO 100% SUBSTANTIALLY ALL BEING COBALT AND IRON OF WHICH THE IRON CONTENT AMOUNTS TO AT LEAST 35% AND DOES NOT EXCEED 80% OF THE TOTAL SUM OF THE COMBINED IRON AND COBALT CONTENTS.
Claim 2
Dependent Claim
69 words
WELDABLE COBALT BEARING HARD ALLOYS OF HIGH STRENGTH AT ELEVATED TEMPERATURES CONTAINING 0.8% TO 3% CARBON 0.3% TO 3.5% SILICON 23% TO 32% CHROMIUM 2% TO 30% TUNGSTEN 3% TO 15% MOLYBDENUM THE BALANCE UP TO 100% SUBSTANTIALLY ALL BEING COBALT AND IRON OF WHICH THE IRON CONTENT AMOUNTS TO AT LEAST 35% AND DOES NOT EXCEED 80% OF THE TOTAL SUM OF THE COMBINED IRON AND COBALT CONTENTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |