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:
Apr. 10, 1990
Filed:
Jul. 06, 1987
Satoru Kamada, Yamato, JP;
Shuji Iwasaki, Machida, JP;
Toyo Soda Manufacturing Co., Ltd., Shinnanyo, JP;
Abstract
An immunoassay method and apparatus includes the vibration of beads within a cell, the beads having a complex of a substance conjugated with an enzyme as a marker on the surface thereof, and using an optical measurement device to quantatively determine the amount of the marker in the cell. The vibration is provided by including a magnetic material in the beads and causing a magnetic field to move within the cell. The vibrations have at least a component transverse to a measurement direction of the optical measurement device. The movement of the magnetic field in the cell is caused by the reciprocation of a bar having magnets thereon and in a position adjacent to the cell.