CPC Main Group
B28B 11/00 Apparatus or processes for treating or working the shaped articles (specially adapted for tubular articles B28B21/92; decoration or surface treatment in general B05, B44; compacting concrete in situ in connection with building E04G21/06; drying F26)
Filing statistics
CPC B28B 11/00 belongs to the parent subclass B28B, which recorded 57,301 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,365 in 2013 to 5,105 in 2023 (+116%), peaking at 7,697 applications in 2020. The most active applicants in class B28 are DISCO CORPORATION (1,471 applications), HILTI (575 applications) and CORNING (544 applications).
Source: EPO PATSTAT, worldwide filings
11 direct subcodes
Child Classifications
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- B28B 11/02 for attaching appendages, e.g. handles, spouts
- B28B 11/04 for coating (glazing, engobing C04B)
- B28B 11/08 for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
- B28B 11/12 for removing parts of the articles by cutting
- B28B 11/14 for dividing shaped articles by cutting
- B28B 11/18 for removing burr
- B28B 11/22 for cleaning
- B28B 11/24 for curing, setting or hardening (processes for influencing or modifying the setting or hardening ability of mortars, concrete or artificial stone compositions, in general C04B40/00)
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