US2802755A
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
- 👤 Fredrick K Bloom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:46
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/308; Y; Y10; 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; Y10T428/2933; Y10T428/294; Y10T428/2951
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
A HARD FACING ELECTRODE FOR THE PRODUCTION OF A FACING WHICH IS SUBSTANTIALLY FULLY MARTENSITIC AS DEPOSITED COMPRISING A METALLIC CORE, AND A FLUX COATING THEREON, SAID CORE AND COATING ESSENTIALLY CONSISTING OF ABOUT 11.6% TO 25.6% CHROMIUM, INCIDENTAL AMOUNTS UP TO ABOUT 5.5% NICKEL, INCIDENTAL AMOUNTS UP TO ABOUT 14.6% MANGANESE, ABOUT 0.15% TO 1.30% CARBON, WITH CHROMIUM CONTENT EXCEEDING THE SUM OF THE NICKEL AND MANGANESE CONTENTS AND SAID CHROMIUM, NICKEL, MANGANESE AND CARBON BEING SUBSTANTIALLY CONSISTENT WITH THE EMPIRICAL FORMULA: PERCENT CHROMIUM(PERCENT NICKEL+38(PERCENT MANGANESE)
Claim 2
Dependent Claim
87 words
A HARD FACING ELECTRODE FOR THE PRODUCTION OF A FACING WHICH IS SUBSTANTIALLY FULLY MARTENSITIC AS DEPOSITED COMPRISING A METALLIC CORE, AND A FLUX COATING THEREON, SAID CORE AND COATING ESSENTIALLY CONSISTING OF ABOUT 11.6% TO 25.6% CHROMIUM, INCIDENTAL AMOUNTS UP TO ABOUT 5.5% NICKEL, INCIDENTAL AMOUNTS UP TO ABOUT 14.6% MANGANESE, ABOUT 0.15% TO 1.30% CARBON, WITH CHROMIUM CONTENT EXCEEDING THE SUM OF THE NICKEL AND MANGANESE CONTENTS AND SAID CHROMIUM, NICKEL, MANGANESE AND CARBON BEING SUBSTANTIALLY CONSISTENT WITH THE EMPIRICAL FORMULA: PERCENT CHROMIUM(PERCENT NICKEL+38(PERCENT MANGANESE)
Claim 3
Dependent Claim
16 words
+7.5(PERCENT CARBON) =A NUMERICAL VALUE RANGING BETWEEN 61 AND 116, AND THE REMAINDER SUBSTANTIALLY ALL IRON.
Claim 4
Dependent Claim
16 words
+7.5(PERCENT CARBON) =A NUMERICAL VALUE RANGING BETWEEN 61 AND 116, 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 |