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. 13, 1983
Filed:
Dec. 29, 1980
Hajime Yamamoto, Hitachi, JP;
Yoshihiko Sato, Ibaraki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An ionization detector which ionizes particles of a substance to be easily ionized and then measures the number of the ionized particles as ionization current. The detector comprises a heater for ionizing particles, a collector disposed opposite to the heater for collecting ionized particles, and a control arrangement for controlling the temperature of the heater to a constant value. Thus, by preventing the fluctuation of the temperature of the heater due to the fluctuations of the voltage of the power source and of the flow of a cooling fluid which is detected as the ionized particles, an exact measurement of the number or concentration of ionized particles can be performed.