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:
May. 12, 1998
Filed:
May. 01, 1995
Eiichi Nakajima, Kawasaki, JP;
Yasuo Udoh, Kawasaki, JP;
Tsutomu Iikawa, Kawasaki, JP;
Toshisuke Kitakohji, Kawasaki, JP;
Teruo Motoyoshi, Kawasaki, JP;
Takashi Furusawa, Kawasaki, JP;
Shiori Yamazaki, Kawasaki, JP;
Masao Nakayama, Kawasaki, JP;
Michiko Satoh, Kawasaki, JP;
Shigeru Fukushima, Kawasaki, JP;
Mayumi Itabashi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
There is provided a test piece by which NO.sub.x, present in an environment may be visually observed apart from the influence of other gases, and with which qualitative and quantitative analysis may be performed. The test piece has a layered structure prepared by vacuum deposition a metal thin-film (Ag, Pt, Au, etc.) on a metal substrate (Cu, Zn, etc.). The rough amounts of NO.sub.x, SO.sub.x and NH.sub.3 in the environment are determined on the basis of the corrosion products (nitrates, etc.) produced when NO.sub.x, SO.sub.x and NH.sub.3 are collected after the test piece has been exposed to the environment for a prescribed period of time.