Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Subgroup Additional Only
H04L 2209/04

Masking or blinding

Full Title

Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00 > Masking or blinding

2 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • H04L 2209/043 of tables, e.g. lookup, substitution or mapping
  • H04L 2209/046 of operations, operands or results of the operations

Top Applicants

Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT

  1. HUAWEI TECHNOLOGIES COMPANY CN 101,476
  2. QUALCOMM US 101,139
  3. SAMSUNG ELECTRONICS COMPANY KR 96,655
  4. TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
  5. LG ELECTRONICS KR 55,253
  6. HUAWEI TECHNOLOGIES COMPANY 54,181
  7. SONY CORPORATION JP 35,309
  8. ZTE CORPORATION CN 32,950
  9. INTEL CORPORATION US 27,533
  10. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498