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:
Sep. 23, 2025
Filed:
Nov. 13, 2023
Daikin Industries, Ltd., Osaka, JP;
Daikin Fluorochemicals (China) Co., Ltd., Jiangsu, CN;
Masayoshi Miyamoto, Osaka, JP;
Hiroyuki Sendan, Osaka, JP;
Kouichi Hirota, Osaka, JP;
Makoto Kawamorita, Osaka, JP;
Tsunehiko Fuwa, Jiangsu, CN;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
DAIKIN FLUOROCHEMICALS (CHINA) CO., LTD., Jiangsu, CN;
Abstract
A method for removing metallic foreign matter from a fluororesin and a method for producing a fluororesin with reduced metallic foreign matter, which methods include applying a magnetic field to a fluororesin with a magnet while dropping the fluororesin by gravity to thereby remove metal, wherein the methods provide a screen made of a magnetic material in a flow path of the fluororesin dropped by gravity, and when the fluororesin passes through the screen, the screen is not vibrated.