US2807562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding composition for hard facing
Assignee: Union Carbide Corp
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Filing: 1956-03-27
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Granted: 1957-09-24
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Expires: 1976-03-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Shrubsall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:31
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/362; B23K35/24; B23K35/30; B23K35/3053; B23K35/308; B23K35/3601; B23K35/3602; B23K35/3607
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A WELDING COMPOSITION CONTAINING 8% TO 12% FERROCHROMIUM, 2% TO 4% FERROMANGANESE, UP TO 8% FLUORSPAR, THE REMAINDER SLAG-FORMING CONSTITUENT, SAID SLAGFORMING CONSTITUENTS COMPRISING 23% TO 27% MAGNESIA, 21% TO 25% ALUMINA, UP TO 5% LIME, UP TO 3% IRON OXIDE (CALCULATED AS FEO), UP TO 3% CHROMIC OXIDE (CR2O3), THE REMAINDER SILICA AND INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
56 words
A WELDING COMPOSITION CONTAINING 8% TO 12% FERROCHROMIUM, 2% TO 4% FERROMANGANESE, UP TO 8% FLUORSPAR, THE REMAINDER SLAG-FORMING CONSTITUENT, SAID SLAGFORMING CONSTITUENTS COMPRISING 23% TO 27% MAGNESIA, 21% TO 25% ALUMINA, UP TO 5% LIME, UP TO 3% IRON OXIDE (CALCULATED AS FEO), UP TO 3% CHROMIC OXIDE (CR2O3), THE REMAINDER SILICA AND INCIDENTAL IMPURITIES.
References Cited (Backward Citations)
US2191471A
Cited
US2427350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |