Patents by Inventor Hee-Chan Ahn

Hee-Chan Ahn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

Apparatus for manufacturing compound powder, method of manufacturing iron-boron compound powder by using the apparatus, boron alloy powder mixture, method of manufacturing the boron alloy powder mixture, combined powder structure, method of manufacturing the combined powder structure, steel pipe, and method of manufacturing the steel pipe

Patent number: 9725789

Abstract: Provided are an apparatus for manufacturing a compound powder, a method of manufacturing an iron-boron compound powder by using the apparatus, a boron alloy powder mixture, a method of manufacturing the boron alloy powder mixture, a combined powder structure, a method of manufacturing the combined powder structure, a steel pipe, and a method of manufacturing the steel pipe The method of manufacturing the boron alloy powder mixture includes: preparing a mixed powder including a boron iron alloy powder and a target powder; heat-treating the mixed powder to boronize at least a portion of the target powder and de-boronize at least a portion of the boron iron alloy powder, thereby de-boronizing the boron iron alloy powder to reduce the melting point of the boron iron alloy powder.

Type: Grant

Filed: June 8, 2012

Date of Patent: August 8, 2017

Assignee: KMT CO., LTD.

Inventors: Kee-Seok Nam, Jung-Dae Kwon, Jong-Joo Rha, Hee-Chan Ahn, Tae-Su Lim
APPARATUS FOR MANUFACTURING COMPOUND POWDER, METHOD OF MANUFACTURING IRON-BORON COMPOUND POWDER BY USING THE APPARATUS, BORON ALLOY POWDER MIXTURE, METHOD OF MANUFACTURING THE BORON ALLOY POWDER MIXTURE, COMBINED POWDER STRUCTURE, METHOD OF MANUFACTURING THE COMBINED POWDER STRUCTURE, STEEL PIPE, AND METHOD OF MANUFACTURING THE STEEL PIPE

Publication number: 20140096858

Abstract: Provided are an apparatus for manufacturing a compound powder, a method of manufacturing an iron-boron compound powder by using the apparatus, a boron alloy powder mixture, a method of manufacturing the boron alloy powder mixture, a combined powder structure, a method of manufacturing the combined powder structure, a steel pipe, and a method of manufacturing the steel pipe The method of manufacturing the boron alloy powder mixture includes: preparing a mixed powder including a boron iron alloy powder and a target powder; heat-treating the mixed powder to boronize at least a portion of the target powder and de-boronize at least a portion of the boron iron alloy powder, thereby de-boronizing the boron iron alloy powder to reduce the melting point of the boron iron alloy powder.

Type: Application

Filed: June 8, 2012

Publication date: April 10, 2014

Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS

Inventors: Kee-Seok Nam, Jung-Dae Kwon, Jong-Joo Rha, Hee-Chan Ahn, Tae-Su Lim