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, 2003
Filed:
Dec. 12, 2001
Tetsuya Ikeda, Yokohama, JP;
Minoru Danno, Yokohama, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A discharge tube ( ) made of a dielectric material extends through a hole ( ) of a rectangular waveguide ( ) and through a coaxial microwave cavity ( ) so as to be coaxial with the central axis of the cavity ( ). This discharge tube ( ) has a double-tube structure including an outer tube ( ) and an inner tube ( ). The sectional area of an annular gap formed between the outer tube ( ) and the inner tube ( ) is held constant over the entire length of the inner tube ( ). This allows the generation of a stable thermal plasma when a reaction gas containing an organic halide and water vapor is supplied into the outer tube through the annular gap with a microwave transmitted from the rectangular waveguide ( ) into the cavity ( ).