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.

Date of Patent:
Mar. 17, 1992

Filed:

May. 07, 1990
Applicant:
Inventors:

Yasuhiko Yokomori, Shizuoka, JP;

Masato Ohta, Shizuoka, JP;

Masahide Kimura, Shizuoka, JP;

Kunio Kurata, Chiba, JP;

Yoshinobu Kubo, Chiba, JP;

Yoshiharu Matsuoka, Chiba, JP;

Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G01N / ;
U.S. Cl.
CPC ...
436165 ; 436164 ; 436518 ; 436805 ; 73 641 ; 356 39 ; 356427 ; 356440 ; 364555 ;
Abstract

The aggregation pattern of particles is determined by obtaining luminous intensity curves representative of the particle aggregation pattern, obtaining a first threshold face by cutting the curves with a plane positioned at a first given height, obtaining a second threshold face by cutting the curves with a plane positioned at a second given height and determining the particle aggregation pattern by calculating the ratio of the area of the first threshold face to the area of the second threshold face.


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