Toyo Boseki Kabushiki Kaisha

Nippondenso Co., Ltd.

Boseki Kabushiki Kaisha

Hideki Komagata

Susumu Ohmori

Yatsuhiro Tani

Masanori Nakamura

Masayoshi Shimada

Yasuhiro Iizuka

Chyuji Inukai

Takeshi Mitomi

Eiji Yoshimura

Eizi Chino

Yoshio Tojima

A filter for removing dust from fluids, which comprises fibers bonded each other with a binder and hot-pressed, having a fiber density of 0.01 to 0.1 at the fluid inlet side and a fiber density of 0.05 to 0.5 at the fluid outlet side with a continuous fiber density gradient and having a uniform distribution of fiber material in direction of thickness, and a process for the production thereof. The filter is particularly useful as an air filter for automobiles or air conditioners.

Filter and process for the production thereof

A filter for removing dusts from fluids, which comprises fibers bonded each other with a binder and/or hot-pressed, having a fiber density of 0.01 to 0.1 at the side of inflow of fluid to be treated and a fiber density of 0.05 to 0.5 at the side of outflow of the fluid with a continuous fiber density gradient and having a uniform distribution of fiber material in direction of thickness, and a process for the production thereof. The filter is particularly useful as an air filter for automobiles or air conditioner.

Process for making a filter having a continuous density gradient

A magnetic recording medium having a magnetic layer of superior smoothness and excellent abrasion resistance and durability. The magnetic layer contains a polyurethane resin having a metal sulfonate group in the amount of 10-1000 equivalents/10.sup.6 g of the polymer; an ester of C.sub.10 -C.sub.18 fatty acid with butyl cellosolve and ferromagnetic fine particles.

Magnetic recording medium

In a metal-halogen secondary battery a sheet-shaped article containing porous carbon fibers is joined to the surface of the positive electrode.

Metal-halogen secondary battery

A protective material comprising a cloth layer wherein the apparent density at one of the surfaces is smaller than that of the entire body of the cloth layer and a layer of active carbon integrally provided on the other surface of the cloth layer.

Growing community of inventors

Otsu, Japan

Hideki Komagata