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US3726643A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of producing refractory carbides,borides,silicides,sulfides,and nitrides of metals of groups iv,v,and vi of the periodic system

Assignee: FILIAL INST KHIMICHESKOI FIZIKI AKADEMII NAUK SU
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Filing: 1970-04-09
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Granted: 1973-04-10
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Expires: 1990-04-09
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Abstract

Abstract A METHOD OF PRODUCING REFRACTORY INORGANIC COMPOUNDS SUCH AS CARBIDES, BORIDES, NITRIDES, SILICIDES, OXIDES, PHOSPHIDES, SULPHIDES, FLUORIDES AND CHLORIDES OF METALS OF THE IV, V AND VI GROUPS, IN WHICH AT LEAST ONE OF THE METALS OF THE IV, V AND VI GROUPS OF THE PERIODIC SYSTEM IS MIXED WITH ONE OF THE NON-METALS N, C, B, SI, O2, P, S, F, OR CL2 AND TO THE RESULTING MIXTURE IS INTRODUCED IGNITION MEANS FOR GENERATING A TEMPERATURE SUFFICIENT FOR STARTING THE PROCESS OF COMBUSTION OF THE INITIAL COMPONENTS WHOSE FURTHER INTERACTION TAKES PLACE OWING TO HEAT HENERATED BY THE REACTION, THE REACTION OF METALS WITH METALLOIDS, C, B, SI, P, S BEING CARRIED OUT IN AN INERT GAS MEDIUM.

Inventors

  • 👤 A Merzhanov
  • 👤 V Shkiro
  • 👤 I Borovinskaya

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 14:45
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/58007; C04B35/58028; C01; C01B; C01B13/00; C01B13/14; C01B13/32; C01B13/322; C01B13/324; C01B21/00; C01B21/06; C01B21/0602; C01B21/0615; C01B21/0617; C01B21/076; C01B21/0761; C01B25/00; C01B25/06; C01B32/00; C01B32/90; C01B33/00; C01B33/06; C01B35/00; C01B35/02; C01B35/04; C01G; C01G1/00; C01G1/06; C01G1/12; C01G33/00; C01G39/00; C01G39/06; C04B35/01; C04B35/56; C04B35/5607; C04B35/5611; C04B35/5622; C04B35/58014; C04B35/5805; C04B35/58064; C04B35/58071; C04B35/58078; C04B35/58085; C04B35/58092; C01P; C01P2002/00; C01P2002/70; C01P2002/77; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/62; C01P2006/00; C01P2006/10; C01P2006/80

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) 1976-04-09 1976-10-09 1977-04-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-09 1980-10-09 1981-04-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-09 1984-10-09 1985-04-10 $7700.00 Window Closed / Lapsed

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