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:
Nov. 23, 2010
Filed:
Jan. 18, 2007
Applicants:
Satoshi Yonehara, Kyoto, JP;
Norio Inamura, Kyoto, JP;
Inventors:
Satoshi Yonehara, Kyoto, JP;
Norio Inamura, Kyoto, JP;
Assignee:
ARKRAY, Inc., Kyoto, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/78 (2006.01);
U.S. Cl.
CPC ...
Abstract
A liquid reagent in which a methylene blue compound color former is stably stored in a liquid state; and a method of stabilizing a methylene blue compound color former in a liquid state. A methylene blue compound color former is stabilized by causing it to coexist with either a quaternary ammonium compound having a Cor higher hydrocarbon chain or a salt thereof in a liquid medium. Examples of the methylene blue compound color former include 10-(carboxymethylaminocarbonyl)-3,7-bis(dimethylamino) phenothiazine.