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:
Oct. 08, 1991
Filed:
Apr. 17, 1989
Applicant:
Inventors:
Mokuji Kageyama, Yokohama, JP;
Ayako Maeda, Kawasaki, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
436178 ; 436177 ; 436174 ;
Abstract
An object to be measured is moved relative to a stick prepared by cooling and solidifying a solution into a rod-like shape. The stick is brought into contact with the surface of the object to be measured, thereby dissolving a natural oxide film and the like formed on the surface of the object. After the stick is brought into contact with the overall surface of the object to be measured, the solution held at the end portion of the stick is analyzed by chemical analysis to measure the type and amount of an impurity adhered on the surface of the object.