CPC Subgroup
B28B 23/04 the elements being stressed
Full Title
Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; (B28B21/00 takes precedence; in units for prefabricated buildings B28B7/22) > wherein the elements are reinforcing members > the elements being stressed
5 direct subcodes
Child Classifications
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- B28B 23/06 for the production of elongated articles
- B28B 23/10 the shaping being effected by centrifugal or rotational moulding
- B28B 23/12 to form prestressed circumferential reinforcements
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