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IPC Main Group
B28B 13/00

Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
WORKING CEMENT, CLAY, OR STONE
Subclass:
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER

Filing statistics

IPC B28B 13/00 belongs to the parent subclass B28B, which recorded 124,681 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,345 in 2013 to 15,254 in 2023 (+251%), peaking at 18,524 applications in 2020. The most active applicants in class B28 are MITSUBOSHI DIAMOND INDUSTRIAL COMPANY (868 applications), QINGDAO GAOCE TECHNOLOGY COMPANY (678 applications) and DISCO CORPORATION (500 applications).

Source: EPO PATSTAT, worldwide filings

2 direct subcodes

Child Classifications

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  • B28B 13/02 Feeding the unshaped material to moulds or apparatus for producing shaped articles

Top Applicants

Top 10 applicants by patent filingsfor class B28, 2013–2023, worldwide · Source: EPO PATSTAT

  1. MITSUBOSHI DIAMOND INDUSTRIAL COMPANY 868
  2. QINGDAO GAOCE TECHNOLOGY COMPANY 678
  3. DISCO CORPORATION JP 500
  4. ZHOU ZHAODI 500
  5. MITSUBOSHI DIAMOND INDUSTRIAL COMPANY JP 456
  6. HILTI LI 455
  7. CORNING US 407
  8. UNITED STATES GYPSUM COMPANY US 375
  9. ZHENGZHOU YUAN DONG REFRACTORIES COMPANY 370
  10. HUNAN SANY KUAIERJU RESIDENTIAL INDUSTRY COMPANY 351