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:
Mar. 22, 2005
Filed:
Aug. 04, 2004
Yasuo Kondo, Nagoya, JP;
Toru Matsuzaki, Nagoya, JP;
Yutaka Suematsu, Nagoya, JP;
Masaru Okamoto, Okayama-ken, JP;
Tomohisa Yamamoto, Okayama-ken, JP;
Yasuo Kondo, Nagoya, JP;
Toru Matsuzaki, Nagoya, JP;
Yutaka Suematsu, Nagoya, JP;
Masaru Okamoto, Okayama-ken, JP;
Tomohisa Yamamoto, Okayama-ken, JP;
Kitagawa Industries Co., Ltd., Nagoya, JP;
Uchiyama Manufacturing Corp., Okayama, JP;
Abstract
A radio wave absorber is provided which can be produced at a low cost compared to the case of using silicon carbide fiber and which is also superior in radio wave absorption property in 76 GHz band (75-77 GHz frequency band). The radio wave absorber is produced by arranging a radio wave absorbing layer onto the surface of a metal body. The radio wave absorbing layer is made of a radio wave absorbing material containing silicon carbide powder dispersed in matrix resin. Average particle diameter of the silicon carbide powder is 4-40 μm. Silicon carbide powder content in the radio wave absorbing material is 15-45 volume %. Thickness of the radio wave absorbing layer is adjusted so that reflection attenuation of not less than 10 dB is provided in 76 GHz band.