Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
B41L 1/18

for carbon webs; Continuous carbon supply mechanisms

Introduced: September 1968

Title

Titles differ between systems:

IPC: for carbon webs; Continuous carbon-supply mechanisms

CPC: for carbon webs; Continuous carbon supply mechanisms

Full Title

Full titles differ between systems:

IPC:

Devices for performing operations in connection with manifolding by means of pressure-sensitive layers or intermediaries, e.g. carbons; Accessories for manifolding purposes > Carriers or supply devices for pressure-sensitive material, e.g. for carbon sheets; Carbon gloves > for carbon webs; Continuous carbon-supply mechanisms

CPC:

Devices for performing operations in connection with manifolding by means of pressure-sensitive layers or intermediaries, e.g. carbons; Accessories for manifolding purposes > Carriers or supply devices for pressure-sensitive material, e.g. for carbon sheets; Carbon gloves > for carbon webs; Continuous carbon supply mechanisms

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

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

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

Top Applicants (CPC)

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

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