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CPC Subgroup
B28C 1/10

for processing clay-containing substances in non-fluid condition (clay slurries B28C1/02 )

Full Title

Apparatus or methods for obtaining or processing clay (filtration in general B01D; separation of solids from solids B03, B07; chemical part C04B; by mining or quarrying E21C41/16, E21C41/26, E21C47/10) > for processing clay-containing substances in non-fluid condition (clay slurries B28C1/02 )

2 direct subcodes

Child Classifications

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  • B28C 1/12 Storing and conditioning in storage; Specially adapted storage spaces or devices for their filling or emptying; (feeding clay to shaping apparatus B28B13/00)

Top Applicants

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

  1. DISCO CORPORATION JP 1,471
  2. HILTI LI 575
  3. CORNING US 544
  4. MITSUBOSHI DIAMOND INDUSTRIAL COMPANY JP 518
  5. UNITED STATES GYPSUM COMPANY US 485
  6. DISCO ABRASIVE SYSTEM 459
  7. GE (GENERAL ELECTRIC COMPANY) US 454
  8. MITSUBOSHI DIAMOND INDUSTRIAL COMPANY 439
  9. DISCO CORPORATION 403
  10. NGK INSULATORS JP 308