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:
Apr. 10, 2007
Filed:
Mar. 29, 2005
Applicant:
Hiroyuki Mitsumoto, Matsuyama, JP;
Inventor:
Hiroyuki Mitsumoto, Matsuyama, JP;
Assignee:
Miura Co., Ltd., Matsuyama-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 33/20 (2006.01); G01N 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
To provide a hardness measurement reagent unaffected by an M alkalinity in hardness measurement. A hardness measurement reagent as a one-solution type reagent includes a dye chosen from Eriochrome Black T (EBT) and Calmagite, triethanolamine, a glycol compound, and a pH buffer, in which the pH buffer includes a combination of amines selected from primary amines and secondary amines and a salt of a weak base.