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:
Sep. 10, 2019
Filed:
Mar. 30, 2016
Applicant:
Nof Corporation, Tokyo, JP;
Inventors:
Masaki Kamiya, Kawasaki, JP;
Ryota Matsuki, Kawasaki, JP;
Assignee:
NOF CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 27/64 (2006.01); G01N 33/68 (2006.01); H01J 49/04 (2006.01); H01J 49/16 (2006.01);
U.S. Cl.
CPC ...
H01J 49/164 (2013.01); G01N 27/64 (2013.01); G01N 33/6851 (2013.01); H01J 49/0418 (2013.01);
Abstract
A matrix-assisted laser desorption (MALDI) mass spectrometry in which a mixture comprising a polyethylene glycol derivative having a molecular weight of 40,000 or more and a matrix is irradiated with laser beam to vaporize the polyethylene glycol derivative together with the matrix, thereby measuring a molecular weight of the polyethylene glycol derivative, wherein as the matrix, a low polar matrix having a 1-octanol/water partition coefficient (logPow) of 4.1 to 4.8 is used. Also disclosed is a matrix for use in the matrix-assisted laser desorption (MALDI) mass spectrometry.