CPC Subgroup
B28B 1/52 specially adapted for producing articles from mixtures containing fibres, (by wrapping on to mandrels B28B1/42)
Full Title
Producing shaped articles from the material (using presses B28B3/00; shaping on moving conveyors B28B5/00; producing tubular articles B28B21/00 ) > specially adapted for producing articles from mixtures containing fibres, (by wrapping on to mandrels B28B1/42)
7 direct subcodes
Child Classifications
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Top Applicants
Top 10 applicants by patent filingsfor class B28, 2013–2023, worldwide · Source: EPO PATSTAT
- DISCO CORPORATION JP 1,471
- HILTI LI 575
- CORNING US 544
- MITSUBOSHI DIAMOND INDUSTRIAL COMPANY JP 518
- UNITED STATES GYPSUM COMPANY US 485
- DISCO ABRASIVE SYSTEM 459
- GE (GENERAL ELECTRIC COMPANY) US 454
- MITSUBOSHI DIAMOND INDUSTRIAL COMPANY 439
- DISCO CORPORATION 403
- NGK INSULATORS JP 308