Top IPC subclasses
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1
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F16H
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6
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gearing
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2
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B23F
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4
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making gears or toothed racks
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3
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C08J
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1
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working-upgeneral processes of compoundingafter-treatment not covered by subclasses , , , or
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4
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F16B
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1
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devices for fastening or securing constructional elements or machine parts together, e.g. nails, bol
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5
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B29B
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1
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preparation or pretreatment of the material to be shapedmaking granules or preformsrecovery of plast
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6
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F16L
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1
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Pipes; joints or fittings for pipes; supports for pipes, cables or protective tubing; means for thermal insulation in general
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7
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A61L
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1
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Methods or apparatus for sterilising materials or objects in general; disinfection, sterilisation, or deodorisation of air; chemical aspects of bandages, dressings, absorbent pads, or surgical articles; materials for bandages, dressings, absorbent pads, or surgical articles
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