logo

For the Inventor, By the Inventor

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.:

US 9157899 B1

PDFFull Text
Date of Patent:
Oct. 13, 2015

Filed:

Oct. 26, 2009

Purifying agent for oily liquid containing polychlorinated biphenyls

Applicant:

Katsuhisa Honda, Matsuyama, JP;

Inventor:

Katsuhisa Honda, Matsuyama, JP;

Assignees:

EHIME UNIVERSITY, Ehime, JP;

MIURA CO., LTD., Ehime, JP;

Attorney:

Birch Stewart Kolasch & Birch, LLP

Primary Examiner:

Ernest G Therkorn

Int. Cl.
CPC ...
G01N 30/14 (2006.01); B01J 20/10 (2006.01); B01J 20/28 (2006.01); B01J 20/32 (2006.01); G01N 1/34 (2006.01); G01N 33/28 (2006.01); G01N 30/72 (2006.01); G01N 30/88 (2006.01);
U.S. Cl.
CPC ...
G01N 30/14 (2013.01); B01J 20/103 (2013.01); B01J 20/28047 (2013.01); B01J 20/28052 (2013.01); B01J 20/3204 (2013.01); B01J 20/3236 (2013.01); G01N 1/34 (2013.01); G01N 33/2835 (2013.01); G01N 30/7206 (2013.01); G01N 2030/884 (2013.01); G01N 2030/8854 (2013.01);
Abstract

A columnfor removing an interfering substance to an analysis of polychlorinated biphenyls contained in an oily liquid such as an electric insulating oil from the oily liquid, includes a first columnpacked with a multilayer silica gelin which an upper layerof a sulfuric acid silica gel is stacked on a lower layerof a nitrate silica gel and a second columnconnected to the lower layerside of the columnand packed with an alumina layer. The nitrate silica gel of the lower layeris produced by treating an activated silica gel with a mixed aqueous solution of copper nitrate and silver nitrate, wherein the ratio by mole of the copper element to the silver element (the copper element:the silver element) is preferably from 1:0.5 to 2.0.

Find Patent Forward Citations

Honda, Katsuhisa. (2015). Purifying agent for oily liquid containing polychlorinated biphenyls (U.S. Patent No. 9157899). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9157899

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…