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:
Feb. 16, 2010
Filed:
Feb. 09, 2007
Yasuo Seto, Kashiwa, JP;
Isaac Ohsawa, Kashiwa, JP;
Hiroshi Sekiguchi, Tokyo, JP;
Hisashi Maruko, Tokyo, JP;
Yasuaki Takada, Kiyose, JP;
Akihiko Okumura, Hachioji, JP;
Hidehiro Okada, Tokyo, JP;
Hisashi Nagano, Higashimurayama, JP;
Izumi Waki, Tokyo, JP;
Yasuo Seto, Kashiwa, JP;
Isaac Ohsawa, Kashiwa, JP;
Hiroshi Sekiguchi, Tokyo, JP;
Hisashi Maruko, Tokyo, JP;
Yasuaki Takada, Kiyose, JP;
Akihiko Okumura, Hachioji, JP;
Hidehiro Okada, Tokyo, JP;
Hisashi Nagano, Higashimurayama, JP;
Izumi Waki, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A gas monitoring apparatus capable of real-time detection of a kind of chemical warfare agent, namely diphenylcyanoarsine (DC) and/or diphenylchloroarsine (DA). Atmospheric pressure chemical ionization mass spectrometry is carried out in the positive ionization mode, the total amount of DC and DA is determined from the intensity of an ion common to DC and DA, the DC concentration is determined from the intensity of an ion specific to DC, and the difference between them is regarded as the DA concentration.