Kawasaki Steel Corporation

Mitsubishi Chemical Industries Limited

Mitsubishi Kasei Corporation

Yoshiki Aoyagi

Shigeru Suzuki

Yoshihiro Matsumoto

Masatoshi Shinozaki

Masatoshi Suzuki

Atsushi Murakami

Kunio Tsukakoshi

Kazuhisa Kojima

Mamoru Nakada

Mitsunori Ajiki

Tadashi Inoue

A planar antenna comprising a dielectric layer containing a homopolymer of 3-methylbutene-1 or a copolymer of 3-methylbutene-1 and an alpha-olefin of from 2 to 12 carbon atoms, a polyene or a mixture thereof, a conductor laminated on the whole back surface of said dielectric layer and a circularly polarized radiation microstrip element formed from a metal foil and provided on the other surface of said dielectric layer.

Planar antenna

A laminate composed of a fire-retardant resin composition comprising a polyolefin resin and hydrate of calcium silicate containing 30% by weight or more of platy crystals and/or needle shaped crystals with an aspect ratio of 3 or higher in sheet form and having metal sheet on both sides thereof.

Fire-retarding resin composition and laminated product thereof

Disclosed is a vibration damping composite laminate of the type comprising a viscoelastic polymer composition layer interposed between two layers of metal, which is high in the damping effectiveness and can readily be spot-welded to metal structures. Essentially the polymer composition is a blend of a polyvinyl acetal resin and particulate carbon which amounts to 10-80 wt % of the composition, on condition that the ratio of the mean particle size of the particulate carbon to the thickness of the polymer composition layer is from 0.5 to 1.7. Optionally the polymer composition may further comprise a polyolefine resin and/or a plasticizer.

Vibration damping composite laminate

Growing community of inventors

Yokohama, Japan

Yoshiki Aoyagi