Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F16
ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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F16C
SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
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2206/00
Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
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F16C2206/40
Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
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F16C2206/58
based on ceramic nitrides
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F16C2206/60
Silicon nitride (Si3N4)l
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