The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2024
Filed:
May. 08, 2019
Nisshin Seifun Group Inc., Tokyo, JP;
Yasunori Tanaka, Ishikawa, JP;
Naoto Kodama, Ishikawa, JP;
Yousuke Ishisaka, Ishikawa, JP;
Shu Watanabe, Saitama, JP;
Keitaro Nakamura, Saitama, JP;
Shiori Sueyasu, Saitama, JP;
NISSHIN SEIFUN GROUP INC., Tokyo, JP;
Abstract
Provided are a method and apparatus capable of producing fine particles with favorable particle size distribution. In a production method in which feedstock for fine particle production is supplied intermittently into a modulated induction thermal plasma flame, the feedstock is vaporized to form a gas phase mixture, and the mixture is cooled to produce the fine particles: a modulated induction thermal plasma flame in which the temperature state is time-modulated is generated; the modulated induction thermal plasma flame is switched between a high temperature state and a low temperature state; and when the modulated induction thermal plasma flame is in the high temperature state, the feedstock is supplied together with a carrier gas, and when the modulated induction thermal plasma flame is in the low temperature state, supply of the feedstock is suspended and a gas of the same type as the carrier gas is supplied.