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:
Oct. 22, 2013
Filed:
May. 20, 2009
Masako Kawarai, Hitachinaka, JP;
Junkichi Miura, Hitachi, JP;
Tami Hiruta, Iwaki, JP;
Yoshinori Inoue, Mitaka, JP;
Masako Kawarai, Hitachinaka, JP;
Junkichi Miura, Hitachi, JP;
Tami Hiruta, Iwaki, JP;
Yoshinori Inoue, Mitaka, JP;
Hitachi High-Technologies Corporation, Tokyo, JP;
Abstract
An object of the present invention is to provide a method and an apparatus by which PCBs in insulating oil can be analyzed with high accuracy in a convenient, inexpensive, and rapid manner. The method for analyzing polychlorobiphenyls by measuring the concentration of polychlorobiphenyls in insulating oil comprises a step of, as pretreatment, bringing particles of a copolymer that contains divinylbenzene and a methacrylate organic monomer as monomer components into contact with insulating oil containing polychlorobiphenyls, so as to separate polychlorobiphenyls in insulating oil from oil content that is an impurity. The methacrylate organic monomer preferably has a diol type hydroxyl group.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile