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DIFF Subgroup
B28C 5/02

without using driven mechanical means effecting the mixing (B28C5/48 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: without using driven mechanical means effecting the mixing

CPC: without using driven mechanical means effecting the mixing (B28C5/48 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions > without using driven mechanical means effecting the mixing

CPC:

Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions (controlling the mixing apparatus and supplying the ingredients B28C7/00 ) > without using driven mechanical means effecting the mixing (B28C5/48 takes precedence)

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • B28C 5/023 CPC only CPC only
  • B28C 5/026 CPC only CPC only
  • B28C 5/04 Gravitational mixing; Mixing by intermingling streams of ingredients ( ; ingredients projected by fluid pressure B28C5/06) IPC+CPC Available in IPC and CPC
  • B28C 5/06 the mixing being effected by the action of a fluid (in combination with driven mechanical means, producing cellular concrete B28C5/38) IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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