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. 21, 2014
Filed:
Nov. 04, 2011
Hidetoshi Morokuma, Hitachinaka, JP;
Yuichiro Hashimoto, Tachikawa, JP;
Masuyuki Sugiyama, Hino, JP;
Masuyoshi Yamada, Ichikawa, JP;
Hideki Hasegawa, Tachikawa, JP;
Hidetoshi Morokuma, Hitachinaka, JP;
Yuichiro Hashimoto, Tachikawa, JP;
Masuyuki Sugiyama, Hino, JP;
Masuyoshi Yamada, Ichikawa, JP;
Hideki Hasegawa, Tachikawa, JP;
Hitachi High-Technologies Corporation, Tokyo, JP;
Abstract
A mass spectrometer of reduced size and weight is provided which is capable to conduct highly accurate mass spectroscopy. The mass spectrometer includes an ion source adapted to ionize gas flowing in from outside in order to ionize a measurement sample and a mass spectroscopy section for separating the ionized measurement sample. The ion source has its interior reduced in pressure by differential pumping from the mass spectroscopy section and ionizes the gas when the interior pressure rises as it inhales the gas, and the mass spectroscopy section separates the ionized measurement sample when its interior pressure falls after inhale of the gas. The mass spectrometer may further include a restriction device for suppressing a flow rate of the gas the ion source inhales and an open/close device for opening and closing a flow of the gas the ion source inhales.