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:
Mar. 19, 2024
Filed:
Mar. 29, 2021
Applicant:
Tokyo Ohka Kogyo Co., Ltd., Kanagawa, JP;
Inventors:
Assignee:
TOKYO OHKA KOGYO CO., LTD., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 1/38 (2006.01); G01N 27/623 (2021.01); G01N 33/44 (2006.01); H01J 49/10 (2006.01);
U.S. Cl.
CPC ...
G01N 1/38 (2013.01); G01N 27/623 (2021.01); G01N 33/442 (2013.01); H01J 49/105 (2013.01); G01N 2001/383 (2013.01);
Abstract
A method of analyzing a metal component contained as an impurity in a polymer composition that contains a polymer and an organic solvent including a step (i) of preparing a dispersion by mixing the polymer composition with an acid aqueous solution, a step (ii) of separating the dispersion prepared in the step (i) into a dispersoid layer containing the polymer and a dispersion medium layer containing the metal component, and a step (iii) of quantifying the metal component contained in the dispersion medium layer separated in the step (ii).