Nihon Micro Coating Co., Ltd.

Hisatomo Ohno

Takashi Fujii

Mitsuru Saito

Nobuyoshi Watanabe

Takuya Nagamine

Masashi Hara

Makoto Kuwabara

Ichiro Kodaka

Claughton Miller

Toshihiro Izumi

A transparent pad having a polishing surface with an average surface roughness of 5 &#x3bc;m or less is used as a polishing pad. An indentation is formed on the back surface of the transparent pad such that its rate of light transmission is locally changed. The transparent pad has a rate of light transmission equal to or greater than 10% or preferably 30% for light of at least one wavelength in the range of 350 nm&#x2013;900 nm.

Polishing pad and method of producing same

An abrasive sheet for fine texture processing has threads planted uniformly on a surface of a flexible base sheet and abrasive particles are attached by a binder to each of these threads uniformly over a specified distance from the tip such that the threads remain free to move independently without getting stuck to each other. Such an abrasive sheet can be manufactured by gravure processing with the separation between a gravure roller and a back roller adjusted according to the distance over which a coating material including the abrasive particles can be applied to the threads.

Abrasive sheet and method of manufacturing same

Growing community of inventors

Tokyo, Japan

Hisatomo Ohno