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US3782930A Expired / Lapsed US ⏱️ 0.0 years remaining

Graphite-containing ferrous-titanium carbide composition

Assignee: Chugai Electric Industrial Co Ltd
•
Filing: 1972-06-13
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Granted: 1974-01-01
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Expires: 1992-06-13
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Abstract

Abstract A SINTERED GRAPHITE-CONTAINING FERROUS-TITANIUM CARBIDE COMPOSITION IS PROVIDED WHICH IS PRODUCED BY A LIQUID PHASE SINTERING PROCESS, WHEREIN A POWDER COMPOSITION COMPRISING A MIXTURE OF IRON, TITANIUM (E.G. FERRO-TITANIUM), CAST IRON AND CARBON IS PRESSED INTO A COMPACT AND THE COMPACT THEN HEATED TO ABOVE THE MELTING POINT OF THE CAST IRON SUCH THAT THE CARBON IN THE MELT REACTS WITH THE TITANIUM TO FORM TITANIUM CARBIDE, THE AMOUNT OF CARBON BEING ALSO SUFFICIENT TO FORM GRAPHITE, SUCH THAT ON COOLING, A METALLOGRAPHIC STRUCTURE IS OBTAINED COMPRISED OF FINE GRAINS OF PRECIPITATED TITANIUM CARBIDE DISPERSED IN A FERROUS MATRIX WHICH ALSO CONTAINS PRECIPITATED PARTICLES OF GRAPHITE.

Inventors

  • 👤 A Shibata

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 23:19
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0292; B; B22; B22F; B22F3/00; B22F3/10; B22F3/1035

Claims Analysis

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References Cited (Backward Citations)

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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) 1976-12-31 1977-07-02 1978-01-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-31 1981-07-02 1982-01-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-31 1985-07-02 1986-01-01 $7700.00 Window Closed / Lapsed

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