Impregnating

Introduced: September 1968

Last revised: January 2006

Full Title

Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor > After-treatment of workpieces or articles > Impregnating

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

Related Keywords

IMPREGNATING of workpieces or articles made from metal powder

Top Applicants

Top 10 applicants by patent filingsfor class B22, 2013–2023, worldwide · Source: EPO PATSTAT

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