US3307011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for increasing electrode life
Assignee: Union Carbide Corp
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Filing: 1963-08-29
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Granted: 1967-02-28
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Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 Robert J Baird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:21
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/40; B23K35/402; H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/34; H05H1/3468; H05H1/28; H05H1/3436
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD FOR INCREASING OPERATING LIFE OF AN ELECTRODE IN AN ARC DEVICE FOR GENERATING AN ARC PLASMA WHICH COMPRISES ESTABLISHING AN ARC BETWEEN TWO ELECTRODES AT LEAST ONE OF WHICH IS IN SAID ARC DEVICE AND IS COMPOSED OF AT LEAST ONE MATERIAL TAKEN FROM THE CLASS CONSISTING OF CARBON, COPPER, SILVER, ALUMINUM, ZIRCONIUM, MOLYBDENUM AND CARBON STEEL, AND PASSING INTO SAID ARC A GAS MIXTURE CONSISTING ESSENTIALLY OF A GAS INERT TO THE ELECTRODE MATERIAL AND A CARBON-CONTAINING GAS CAPABLE OF DEPOSITING CARBON ON SAID ELECTRODE.
Claim 2
Independent Claim
88 words
A METHOD FOR INCREASING OPERATING LIFE OF AN ELECTRODE IN AN ARC DEVICE FOR GENERATING AN ARC PLASMA WHICH COMPRISES ESTABLISHING AN ARC BETWEEN TWO ELECTRODES AT LEAST ONE OF WHICH IS IN SAID ARC DEVICE AND IS COMPOSED OF AT LEAST ONE MATERIAL TAKEN FROM THE CLASS CONSISTING OF CARBON, COPPER, SILVER, ALUMINUM, ZIRCONIUM, MOLYBDENUM AND CARBON STEEL, AND PASSING INTO SAID ARC A GAS MIXTURE CONSISTING ESSENTIALLY OF A GAS INERT TO THE ELECTRODE MATERIAL AND A CARBON-CONTAINING GAS CAPABLE OF DEPOSITING CARBON ON SAID ELECTRODE.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |