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:
Jan. 31, 2012
Filed:
Jun. 21, 2007
Naoji Moriya, Kyoto, JP;
Naoji Moriya, Kyoto, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
An electric field spatially-regularly arranged is applied to particles movably dispersed in a medium to migrate particles. The resulting density distribution of the particles generates a diffraction grating. In the annihilation process of the diffraction grating through the stop or modulation of the application of the electric field, intensity of diffracted light from the diffraction grating is measured to obtain the size of particles. In the above measurement method, the square root or natural logarithm of the measured value of the diffracted light intensity is used for the analysis to evaluate with high convergence the dispersiveness of the particle size with using the least squares method even in the case of particles of dispersive diameter or the case where particles to be measured include particles of different sizes.