Patent US3198932A successfully refreshed from Google Patents.
US3198932A
Expired / Lapsed
US
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Arc electrode
Assignee: Union Carbide Corp
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Filing: 1962-03-30
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Granted: 1965-08-03
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Expires: 1982-03-30
Abstract
No abstract record available.
Inventors
- 👤 Merle H Weatherly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:55
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/34; B; B23; B23K; B23K35/00; B23K35/02; B23K35/0205; B23K35/22; B23K35/222; B23K9/00; B23K9/24; B23K9/28; B23K9/29; B23K9/291; B23K9/296; H05H1/3421; H05H1/3442
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A NON-CONSUMABLE ELETRODE CAPABLE OF MAINTAINING A STABLE ELECTRICAL ARC IN A RELATIVE GAS ATMOSPHERE COMPRISING A FLUID COOLED METAL HOLDER HAVING A HIGH HEAT CONDUCTIVITY AND AN INSERT OF AT LEAST ONE METAL TAKEN FROM THE CLASS CONSISTING OF ZIRCONIUM, THORIUM, LANTHANUM AND STRONTIUM, PROVIDED IN SAID HOLDER AS THE ARC ATTACHING PORTION OF SAID ELECTRODE.
Claim 2
Dependent Claim
57 words
A NON-CONSUMABLE ELETRODE CAPABLE OF MAINTAINING A STABLE ELECTRICAL ARC IN A RELATIVE GAS ATMOSPHERE COMPRISING A FLUID COOLED METAL HOLDER HAVING A HIGH HEAT CONDUCTIVITY AND AN INSERT OF AT LEAST ONE METAL TAKEN FROM THE CLASS CONSISTING OF ZIRCONIUM, THORIUM, LANTHANUM AND STRONTIUM, PROVIDED IN SAID HOLDER AS THE ARC ATTACHING PORTION OF SAID 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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |