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DIFF Subgroup
B22D 41/50

Pouring-nozzles

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like > Pouring-nozzles

CPC:

Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like (B22D39/00, B22D43/00 take precedence) > Pouring-nozzles

Of 8 combined children, 5 exist in both systems.

3 codes are CPC-only extensions.

IPC defines codes here since 1990.

Child Classifications

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  • B22D 41/502 CPC only CPC only
  • B22D 41/505 CPC only CPC only
  • B22D 41/507 CPC only CPC only
  • B22D 41/56 Means for supporting, manipulating or changing a pouring-nozzle since 1990 IPC+CPC Available in IPC and CPC
  • B22D 41/58 with gas injecting means since 1990 IPC+CPC Available in IPC and CPC
  • B22D 41/60 with heating or cooling means since 1990 IPC+CPC Available in IPC and CPC
  • B22D 41/62 with stirring or vibrating means since 1990 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B22,2013–2023, worldwide · Source: EPO PATSTAT

  1. GE (GENERAL ELECTRIC COMPANY) US 1,719
  2. CHINESE ACADEMY OF SCIENCES 1,489
  3. POSCO (POHANG IRON AND STEEL COMPANY) KR 1,248
  4. TOYOTA MOTOR CORPORATION 1,043
  5. SIEMENS DE 1,028
  6. CENTRAL SOUTH UNIVERSITY 959
  7. HEWLETT-PACKARD DEVELOPMENT COMPANY US 891
  8. UNITED TECHNOLOGIES CORPORATION (UTC) US 786
  9. UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING 769
  10. JFE STEEL JP 761

Top Applicants (CPC)

Class B22,2013–2023, worldwide · Source: EPO PATSTAT

  1. GE (GENERAL ELECTRIC COMPANY) US 2,157
  2. HEWLETT-PACKARD DEVELOPMENT COMPANY US 1,633
  3. SIEMENS DE 1,267
  4. POSCO (POHANG IRON AND STEEL COMPANY) KR 1,124
  5. CHINESE ACADEMY OF SCIENCES 1,040
  6. UNITED TECHNOLOGIES CORPORATION (UTC) US 1,015
  7. JFE STEEL JP 884
  8. CENTRAL SOUTH UNIVERSITY 810
  9. HITACHI METALS JP 641
  10. SINTOKOGIO JP 624