Nippon Telegraph and Telephone Corporation

Nikki Co., Ltd.

Tokyo Roki Co., Ltd.

Tadashi Ichikawa

Masashi Iwasaki

Takatsugu Kurosawa

Tomoaki Fukuoka

Yoshinori Maehira

Takaya Kohara

Takayuki Idehara

Koji Kawayoko

Hideaki Kimata

Takaaki Akimoto

Kaoru Wakabayashi

Tsukasa Kimura

Yasuhiro Tomita

Yuka Yorita

Ryota Suzuki

Fumio Adachi

A purpose of the present invention is to improve the oil removal rate in an oil separator that separates and removes oil from gas including the oil as an impurity. The oil separator according to the present invention is characterized by including a first filter member () in a cylindrical shape made with a cylindrical filter material having an air permeability, and positioned such that the target gas flows in from a hollow part as well as a central axis is in an up-down direction, and a second filter member () made with a filter material having air permeability and wrapped around the first filter member () along an outer surface thereof with a predetermined spacing from the outer surface of the first filter member ().

Oil separator

There is provided a filter device for gas including: a cylindrical filter case formed to be airtight; a hollow filter which is formed with an opening in a bottom part thereof, a top part of which is obstructed, and which is placed inside the filter case in such a manner that a central axis thereof substantially aligns with a central axis of the filter case; and a flow controlling plate which is attached roundly between an outlet in the top part of the filter case and the top part of the hollow filter on an inner peripheral wall of the filter case, wherein gas introduced through an inlet in a bottom part of the filter case is introduced into a hollow part of the hollow filter, and also passes through a space between an outer periphery of the hollow filter and the inner peripheral wall of the filter case, and then is discharged through the outlet.

Filter device for gas

Image communication system and method

A binary image reduction method for reducing a binary original picture at a conversion ratio .alpha..sub.x smaller than 1 in a horizontal direction and at a conversion ratio .alpha..sub.y smaller than 1 in a vertical direction to obtain a converted picture,

Binary image reduction method

Growing community of inventors

Yokohama, Japan

Tadashi Ichikawa