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IPC Subgroup
B22F 1/052

characterised by a mixture of particles of different sizes or by the particle size distribution

Introduced: January 2022

Full Title

Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties > Metallic powder characterised by the size or surface area of the particles > characterised by a mixture of particles of different sizes or by the particle size distribution

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
CASTING; POWDER METALLURGY
Subclass:
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER

Top Applicants

Top 10 applicants by patent filingsfor 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