Patent US3420980A successfully refreshed from Google Patents.
US3420980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and material for hard-surfacing
Assignee: L-Tec Co
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Filing: 1966-07-22
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Granted: 1969-01-07
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Expires: 1986-07-22
Abstract
No abstract record available.
Inventors
- 👤 Carmine Annunziata
- 👤 Robert H Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:23
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/36; B23K35/368; B23K35/3601; B23K35/3603; B23K35/3605; B23K35/3607; B23K35/3608
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A CONSUMABLE ELECTRODE FOR ELECTRIC ARE WELDING COMPRISING A STEEL SHEATH CONTAINING A WELDING COMPOSITION COMPRISING FROM ABOUT 5 TO ABOUT 30 WEIGHT PERCENT OF AT LEAST ONE ALUMINUM-BEARING INGREDIENT TAKEN FROM THE CLASS OF ALUMINUM AND ALLOYS OF ALUMINUM; FROM ABOUT 5 TO ABOUT 20 PERCENT BY WEIGHT OF AT LEAST ONE DEOXIDIZER TAKEN FROM THE CLASS CONSISTING OF FERROMANGANESE-SILICON, FERROMANGANESE, FERROSILICON, ZIRCONIUM-SILICON, CALCIUM SILICON, FERROALUMINUM-SILICON, ALKALI METALS AND ALKALINE EARTH METALS; FROM ABOUT 5 TO ABOUT 30 PERCENT BY WEIGHT OF AT LEAST ONE TITANIUM-BEARING COMPOUND TAKEN FROM THE CLASS CONSISTING OF TITANIUM, TITANIUM OXIDE, TITANIUM SUBOXIDE, FERROTITANIUM AND ALKALI AND ALKALINE EARTH METAL TITANATES; AND FROM ABOUT 5 TO ABOUT 70 PERCENT BY WEIGHT IRON POWDER SAID INGREDIENTS COMPRISING BETWEEN 10 AND 50 PERCENT BY WEIGHT OF THE TOTAL WEIGHT OF THE ELECTRODE.
Claim 2
Dependent Claim
136 words
A CONSUMABLE ELECTRODE FOR ELECTRIC ARE WELDING COMPRISING A STEEL SHEATH CONTAINING A WELDING COMPOSITION COMPRISING FROM ABOUT 5 TO ABOUT 30 WEIGHT PERCENT OF AT LEAST ONE ALUMINUM-BEARING INGREDIENT TAKEN FROM THE CLASS OF ALUMINUM AND ALLOYS OF ALUMINUM; FROM ABOUT 5 TO ABOUT 20 PERCENT BY WEIGHT OF AT LEAST ONE DEOXIDIZER TAKEN FROM THE CLASS CONSISTING OF FERROMANGANESE-SILICON, FERROMANGANESE, FERROSILICON, ZIRCONIUM-SILICON, CALCIUM SILICON, FERROALUMINUM-SILICON, ALKALI METALS AND ALKALINE EARTH METALS; FROM ABOUT 5 TO ABOUT 30 PERCENT BY WEIGHT OF AT LEAST ONE TITANIUM-BEARING COMPOUND TAKEN FROM THE CLASS CONSISTING OF TITANIUM, TITANIUM OXIDE, TITANIUM SUBOXIDE, FERROTITANIUM AND ALKALI AND ALKALINE EARTH METAL TITANATES; AND FROM ABOUT 5 TO ABOUT 70 PERCENT BY WEIGHT IRON POWDER SAID INGREDIENTS COMPRISING BETWEEN 10 AND 50 PERCENT BY WEIGHT OF THE TOTAL WEIGHT OF THE ELECTRODE.
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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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |