Ink jet

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed > characterised by bringing liquid or particles selectively into contact with a printing material > Ink jet

CPC:

Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed (mounting, arrangement or disposition of types or dies B41J1/00) > characterised by bringing liquid or particles selectively into contact with a printing material (printing by selective application of impact or pressure on a printing or impression-transfer material B41J2/22) > Ink jet

Of 7 combined children, 6 exist in both systems.

1 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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B41J 2/015 characterised by the jet generation process (B41J2/215 takes precedence) since 1990 IPC+CPC Available in IPC and CPC
B41J 2/07 characterised by jet control (B41J2/205 takes precedence) since 1990 +1 CPC IPC+CPC Available in IPC and CPC
B41J 2/135 Nozzles since 1990 IPC+CPC Available in IPC and CPC
B41J 2/17 characterised by ink handling since 1990 +3 CPC IPC+CPC Available in IPC and CPC
B41J 2/205 for printing a discrete number of tones (B41J2/21 takes precedence) since 1990 +3 CPC IPC+CPC Available in IPC and CPC
B41J 2/21 for multi-colour printing since 1990 +4 CPC IPC+CPC Available in IPC and CPC
B41J 2002/012 2nd only CPC only CPC only

Top Applicants

Top Applicants (IPC)

Class B41,2013–2023, worldwide · Source: EPO PATSTAT

SEIKO EPSON CORPORATION 14,672
CANON 14,153
RICOH COMPANY 8,049
SEIKO EPSON CORPORATION JP 8,044
HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,312
BROTHER INDUSTRIES 6,887
KYOCERA DOCUMENT SOLUTIONS 5,463
CANON JP 5,001
KONICA MINOLTA CORPORATION 4,512
BROTHER INDUSTRIES JP 3,681

Top Applicants (CPC)

Class B41,2013–2023, worldwide · Source: EPO PATSTAT

SEIKO EPSON CORPORATION 8,446
SEIKO EPSON CORPORATION JP 8,438
HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,828
CANON JP 5,419
CANON 4,156
BROTHER INDUSTRIES JP 3,763
BROTHER INDUSTRIES 2,779
RICOH COMPANY JP 2,717
FUJIFILM JP 2,423
RICOH COMPANY 1,739