Patent US3684007A successfully refreshed from Google Patents.
Patent US3309490A successfully refreshed from Google Patents.
US3309490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc welding with a.c. power and cored electrode
Assignee: Hobart Brothers LLC
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Filing: 1966-03-14
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Granted: 1967-03-14
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Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 Howard B Cary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:12
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/16; B23K9/173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN ARC WELDING ELECTRODE FOR WELDING STEEL BY AN ARC CREATED BY AN ALTERNATING CURRENT POWER SUPPLY, SAID ELECTRODE CONSISTING OF A METALLIC TUBE FILLED WITH A COMPOSITION COMPRISING BY WEIGHT 20 TO 40 PARTS OF POTASSIUM TITANATE, 15 TO 45 PARTS OF FERROMANGANESE, 12 TO 25 PARTS OF FERROSILICON, AND A TRACE TO 20 PARTS OF IRON OXIDE.
Claim 2
Dependent Claim
59 words
AN ARC WELDING ELECTRODE FOR WELDING STEEL BY AN ARC CREATED BY AN ALTERNATING CURRENT POWER SUPPLY, SAID ELECTRODE CONSISTING OF A METALLIC TUBE FILLED WITH A COMPOSITION COMPRISING BY WEIGHT 20 TO 40 PARTS OF POTASSIUM TITANATE, 15 TO 45 PARTS OF FERROMANGANESE, 12 TO 25 PARTS OF FERROSILICON, AND A TRACE TO 20 PARTS OF IRON OXIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |