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:
Nov. 30, 2010
Filed:
Jul. 28, 2005
Kazunari Shinbo, Niigata, JP;
Futao Kaneko, Niigata, JP;
Keizo Kato, Niigata, JP;
Yasuo Ohdaira, Niigata, JP;
Takahiro Kawakami, Niigata, JP;
Kazunari Shinbo, Niigata, JP;
Futao Kaneko, Niigata, JP;
Keizo Kato, Niigata, JP;
Yasuo Ohdaira, Niigata, JP;
Takahiro Kawakami, Niigata, JP;
Niigata University, Niigata, JP;
Abstract
A substance adsorption detection method and a sensor utilizing amounts of change in the optical characteristic of a sensitive thin film with respect to the adsorbed amount of a substance to be detected. A clad, a core, and a thin filmfor detecting an adsorbed substance are sequentially stacked on a crystal oscillatorto constitute an optical waveguide layerand a gas adsorption member. An incoming light prismand an outgoing light prismare provided on the surface of the core. Changes in the adsorbed mass of the target substance and in the optical characteristic involved can be detected accurately and simultaneously by utilizing a change in outgoing light originating from a change in propagation loss and a change in the oscillation characteristic of the oscillator, both caused by adsorption of the target substance on the core surface.