US3348929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protecting carbon materials from oxidation
Assignee: METALURGITSCHEN ZAVOD "LENIN"
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Filing: 1963-01-30
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Granted: 1967-10-24
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Expires: 1983-01-30
Abstract
No abstract record available.
Inventors
- 👤 Valtschev Alexander Jordanov
- 👤 Valtscheva Temenushka Nikolova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:11
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/51; C04B41/009; C04B41/52; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C04B41/89; C23; C23C; C23C4/00; C23C4/02; C23C4/04; C23C4/06; C23C4/08; C23C4/10; C23C4/18; H; H05; H05B; H05B7/00; H05B7/02; H05B7/06; H05B7/08; H05B7/085; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/936; Y10S428/937; Y10S428/938; Y10S428/939; Y10S428/941; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12097; Y10T428/12104; Y10T428/12111; Y10T428/12139; Y10T428/12229; Y10T428/12236; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12625; Y10T428/12639; Y10T428/12674; Y10T428/12687; Y10T428/12736; Y10T428/12743; Y10T428/1275; Y10T428/12764; Y10T428/12771; Y10T428/12778; Y10T428/12806; Y10T428/30; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN ARTICLE OF CARBON, SUCH AS A GRAPHITE ELECTRODE, HAVING AN OXIDATION PREVENTING COATING OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) ALUMINUM ALLOYS, WHEREIN THE ALLOYING COMPONENET IS SELEECTED FROM THE GROUP CONSISTING OF BORON, SILICON, TITANIUM, ZIRCONIUM, CHROMIUM AND MOLYBDENUM; (B) HIGH-MELTING CARBIDES AND NITRIDES SELECTED FROM THE GROUP CONSISTING OF BORIC CARBIDE, SILICON CARBIDE, TITANIUM CARBIDE, ZIRCONIUM CARBIDE, CHROMIUM CARBIDE, MOLYBDENUM CARBIDE, TITANIUM NITRIDE AND ZIRCONIUM NITRIDE; AND (C) BIALUMINUM TRIOXIDE, SAID COATING CONSISTING OF AT LEAST ONE LAYER FORMED ON THE CARBON ARTICLE BY FIRST APPLYING THE COATING FORMING MATERIAL TO THE CARBON ARTICLE AND THEREAFTER ELECTRIC ARC TREATING THE MATERIAL TO A TEMPERATURE ABOUT 2,000*C., FOR LESS THAN HALF A SECOND WITHOUT SUBSTANTIALLY HEATING THE CARBON ARTICLE PROPER.
Claim 2
Dependent Claim
125 words
AN ARTICLE OF CARBON, SUCH AS A GRAPHITE ELECTRODE, HAVING AN OXIDATION PREVENTING COATING OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) ALUMINUM ALLOYS, WHEREIN THE ALLOYING COMPONENET IS SELEECTED FROM THE GROUP CONSISTING OF BORON, SILICON, TITANIUM, ZIRCONIUM, CHROMIUM AND MOLYBDENUM; (B) HIGH-MELTING CARBIDES AND NITRIDES SELECTED FROM THE GROUP CONSISTING OF BORIC CARBIDE, SILICON CARBIDE, TITANIUM CARBIDE, ZIRCONIUM CARBIDE, CHROMIUM CARBIDE, MOLYBDENUM CARBIDE, TITANIUM NITRIDE AND ZIRCONIUM NITRIDE; AND (C) BIALUMINUM TRIOXIDE, SAID COATING CONSISTING OF AT LEAST ONE LAYER FORMED ON THE CARBON ARTICLE BY FIRST APPLYING THE COATING FORMING MATERIAL TO THE CARBON ARTICLE AND THEREAFTER ELECTRIC ARC TREATING THE MATERIAL TO A TEMPERATURE ABOUT 2,000*C., FOR LESS THAN HALF A SECOND WITHOUT SUBSTANTIALLY HEATING THE CARBON ARTICLE PROPER.
References Cited (Backward Citations)
US650040A
Cited
US1924876A
Cited
US1982012A
Cited
US2592414A
Cited
US2900281A
Cited
US2858411A
Cited
US3016311A
Cited
GB894469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |