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:
Apr. 19, 2005
Filed:
Mar. 25, 2003
Fuminori Nakamura, Nagaokakyo, JP;
Toru Tanizaki, Kyoto, JP;
Yohei Ishikawa, Yokohama, JP;
Taiyo Nishiyama, Otsu, JP;
Fuminori Nakamura, Nagaokakyo, JP;
Toru Tanizaki, Kyoto, JP;
Yohei Ishikawa, Yokohama, JP;
Taiyo Nishiyama, Otsu, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A guide marker includes a substrate and a radio-wave reflecting unit for reflecting radio waves at certain intensity in all directions in a virtual plane, including the incident direction of the radio waves, the radio-wave reflecting unit being provided in the surface of the substrate. The radio-wave reflecting unit includes a concave and convex portions provided in the substrate or radio-wave reflectors which resonate at the frequency of incident radio waves and which reflect the radio waves in the incident direction. The radio-wave reflectors are mounted on the substrate. A visual guide marker device includes one of a light-reflecting component having a reflection characteristic and a light-generating component which self-generates light, and a guide marker including a dielectric material.