Patent US3352993A successfully refreshed from Google Patents.
US3352993A
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Method for electroslag welding
Assignee: Yawata Welding Electrode Co Ltd
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Filing: 1966-02-07
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Granted: 1967-11-14
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Expires: 1986-02-07
Abstract
No abstract record available.
Inventors
- 👤 Suzuki Haruyoshi
- 👤 Ishizaki Keizo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:20
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0255; B23K35/0294; B23K25/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3602
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN THE PROCESS FOR ELECTROSLAG WELDING OF BASE METALS BY PASSING AN ELECTRIC CURRENT THROUGH A SLAG POOL VIA AN ELECTRODE, ONE END OF WHICH IS IMMERSED IN THE POOL TO FORM A WELD, AND FEEDING THE ELECTRODE THROUGH A NOZZLE INTO THE SLAG POOL AS IT IS CONSUMED THEREIN, THE IMPROVEMENT NOZZLE HAVING THEREON AN INSULATING LAYER, COMPRISING AN ELECTROSLAG WELDING FLUX HAVING A COMPOSITION BY WEIGHT OF FROM ABOUT 20 TO 50% SILICON DIOXIDE, FROM ABOUT 5 TO ABOUT 40% CALCIUM OXIDE, UP TO ABOUT 25% MAGNESIUM OXIDE, UP TO ABOUT 25% MANGANOUS OXIDE, UP TO ABOUT 15% ALUMINUM OXIDE, AND UP TO ABOUT 40% CALCIUM FLUORIDE.
Claim 2
Dependent Claim
109 words
IN THE PROCESS FOR ELECTROSLAG WELDING OF BASE METALS BY PASSING AN ELECTRIC CURRENT THROUGH A SLAG POOL VIA AN ELECTRODE, ONE END OF WHICH IS IMMERSED IN THE POOL TO FORM A WELD, AND FEEDING THE ELECTRODE THROUGH A NOZZLE INTO THE SLAG POOL AS IT IS CONSUMED THEREIN, THE IMPROVEMENT NOZZLE HAVING THEREON AN INSULATING LAYER, COMPRISING AN ELECTROSLAG WELDING FLUX HAVING A COMPOSITION BY WEIGHT OF FROM ABOUT 20 TO 50% SILICON DIOXIDE, FROM ABOUT 5 TO ABOUT 40% CALCIUM OXIDE, UP TO ABOUT 25% MAGNESIUM OXIDE, UP TO ABOUT 25% MANGANOUS OXIDE, UP TO ABOUT 15% ALUMINUM OXIDE, AND UP TO ABOUT 40% CALCIUM FLUORIDE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |