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:
May. 12, 2009
Filed:
Apr. 17, 2002
Masaya Kakuta, Shizuoka, JP;
Masahiko Tanikawa, Tokyo, JP;
Naoyoshi Kuroyanagi, Tokyo, JP;
Yoshiyuki Endo, Tokyo, JP;
Masaya Kakuta, Shizuoka, JP;
Masahiko Tanikawa, Tokyo, JP;
Naoyoshi Kuroyanagi, Tokyo, JP;
Yoshiyuki Endo, Tokyo, JP;
Chugai Seiyaku Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of quantifying an ethylene oxide based nonionic surfactant in a sample containing a physiologically active protein, characterized in that quantitation is performed by colorimetry, in particular, a method of quantifying an ethylene oxide based nonionic surfactant in a sample containing a physiologically active protein, characterized in that an ammonium thiocyanate/cobalt nitrate reagent (CoSCN reagent) is added to said sample solution and the resulting cobalt thiocyanate complex is quantified by absorbance measurement.