US2802756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weld-electrode and product
Assignee: Armco Inc
•
Filing: 1953-01-21
•
Granted: 1957-08-13
•
Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Bloom Fredrick Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:45
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/308; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/94; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12104; Y10T428/12111; Y10T428/12125; Y10T428/12139; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12972; Y10T428/12979; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/292; Y10T428/2933; Y10T428/294; Y10T428/2951
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A HARD FACING ELECTRODE FOR THE PRODUCTION OF A FACING WHICH IS INITIALLY SOFT AS A DEPOSITED BUT WHICH READILY TRANSFORMS TO MARTENSITE UPON COLD-WORKING COMPRISING A METAL CORE AND A COATING THEREON, SAID CORE AND COATING IN TOTAL ESSENTIALLY CONSISTING OF ABOUT 11.6% TO 25.6% CHROMIUM, NICKEL INCIDENTALS UP TO ABOUT 9.9%, MANGANESE INCIDENTALS UP TO ABOUT 26.3%, ABOUT 0.16%% TO 2.19% CARBON, WITH THE CHROMIUM CONTENT EXCEEDING THE SUM OF THE NICKEL AND MANGANESE CONTENTS AND WITH THE RELATIONSHIP BETWEEN THE CHROMIUM, NICKEL, MANGANESE AND CARBON CONTENTS FURTHER RESTRICTED TO THE RELATIONSHIP BETWEEN EMPIRICAL FORMULA: PERCENT CHROMIUM (PERCENT NICKEL +.38(PERCENT MANGANESE)+ 7.5(PERCENT CARBON)=A NUMERICAL VALUE IN EXCESSOF 116 BUT NOT EXCEEDING 189, AND THE REMAINDER SUBSTANTIALLY ALL IRON.
Claim 2
Dependent Claim
120 words
A HARD FACING ELECTRODE FOR THE PRODUCTION OF A FACING WHICH IS INITIALLY SOFT AS A DEPOSITED BUT WHICH READILY TRANSFORMS TO MARTENSITE UPON COLD-WORKING COMPRISING A METAL CORE AND A COATING THEREON, SAID CORE AND COATING IN TOTAL ESSENTIALLY CONSISTING OF ABOUT 11.6% TO 25.6% CHROMIUM, NICKEL INCIDENTALS UP TO ABOUT 9.9%, MANGANESE INCIDENTALS UP TO ABOUT 26.3%, ABOUT 0.16%% TO 2.19% CARBON, WITH THE CHROMIUM CONTENT EXCEEDING THE SUM OF THE NICKEL AND MANGANESE CONTENTS AND WITH THE RELATIONSHIP BETWEEN THE CHROMIUM, NICKEL, MANGANESE AND CARBON CONTENTS FURTHER RESTRICTED TO THE RELATIONSHIP BETWEEN EMPIRICAL FORMULA: PERCENT CHROMIUM (PERCENT NICKEL +.38(PERCENT MANGANESE)+ 7.5(PERCENT CARBON)=A NUMERICAL VALUE IN EXCESSOF 116 BUT NOT EXCEEDING 189, AND THE REMAINDER SUBSTANTIALLY ALL IRON.
References Cited (Backward Citations)
US1893160A
Cited
US2156307A
Cited
US2050043A
Cited
US2156298A
Cited
US2156299A
Cited
US2240672A
Cited
US2436867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |