Road structure – process – or apparatus – Pavement
Reexamination Certificate
2007-01-09
2007-01-09
Addie, Raymond (Department: 3671)
Road structure, process, or apparatus
Pavement
C404S027000, C404S071000, C404S082000
Reexamination Certificate
active
10491319
ABSTRACT:
An electromagnetic absorber formed of conductive fiber or the like, such as carbon fiber having an overall length corresponding to the wavelength of electromagnetic waves to be absorbed, is mixed into a base material to form an electromagnetic wave-absorbing pavement material. The electromagnetic wave-absorbing pavement material is used to form a pavement having an electromagnetic wave absorbing course. Further, an electromagnetic wave reflecting course is disposed under the electromagnetic wave absorbing course, and the electric length of the electromagnetic wave reflecting course is set to a predetermined value in relation to the dielectric constant so that electromagnetic waves reflecting off the surface of the electromagnetic wave absorbing course and electromagnetic waves reflecting off the electromagnetic wave reflecting course have opposite phases and thereby cancel each other out, whereby the electromagnetic waves are absorbed well.
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“‘Electromagnetic Wave Absorbing Paving’ Developed As a Measure Against Road Electromagnetic Waves” by Takenaka Corporation dated Jun. 4, 2001 (available at http://www.takenaka.co.jp/takenaka—e
ews—e/pr0106/m0106—01.htm).
Andoh Shin-ichiro
Fujii Yoshifumi
Harakawa Kenichi
Iwata Takeo
Kunishima Takeshi
Addie Raymond
Brown & Raysman Millstein Felder & Steiner LLP
Takenaka Civil Engineering & Construction Co., Ltd.
Takenaka Corporation
Takenaka Road Construction Co., Ltd.
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