Kureha Kagaku Kogyo Kabushiki Kaisha

Chiyoda Chemical Engineering Construction Co., Ltd.

Hisao Takahashi

Takeshi Nomura

Hiroshi Hozuma

Akira Hamada

Naoshi Kawabe

Naotaka Miwa

Masatomo Shigeta

Tomizo Endo

Kiyoji Ozaki

Seiichi Suzuki

Keiichi Ohira

Yoshitomo Ohara

Hajime Nakanishi

Haruo Izumida

Minoru Akimoto

An electrode terminal structure for a polymer piezoelectric element is provided. The polymer piezoelectric element comprises a polymer piezoelectric film and a pair of electrode films formed on both sides of the piezoelectric film. A conductor plate and an insulating plate are successively disposed at a part near the periphery on one surface of the polymer piezoelectric film element. The thus stacked part is sandwiched between a double-layered conductor plate and the entire stacked structure is pressure bonded to form the above-mentioned electrode terminal structure.

Electrode terminal structure for a piezoelectric polymer

An electroconductive film having moderate transparency and electroconductivity and excellent mechanical properties inclusive of a good tear strength is provided through a process wherein an electroconductive fiber is dispersed over a thermoplastic resin film, and the thus formed loosely laminated sheet is hot-pressed between a pair of rollers having temperatures above and below the softening point of the thermoplastic resin film, at least one of the rollers being surfaced with an elastic material. The electroconductive film is suitably used as a packaging material for shielding electromagnetic wave.

Electroconductive film and process for production thereof

A decoking apparatus suitable for use on a reaction vessel for the thermal cracking of heavy petroleum oils the apparatus essentially including a rotatable main injection pipe to be disposed in the reaction vessel and having a multitude of jet nozzles along its length, and a second or auxiliary injection pipe positioned in the proximity of the main injection pipe to inject a scrubbing liquid over the outer peripheral walls of the main injection pipe to prevent deposition of coke. The main and auxiliary injection pipes are both supplied with heavy petroleum oil to remove the coke deposition from the reactor wall by the heavy petroleum oil jets from the main injection pipe while wetting the exterior of the main pipe with the heavy petroleum oil injected by the auxiliary injection pipe.

Decoking apparatus

A decoking device suitable for use on a reaction vessel for the thermal cracking of heavy petroleum oils, including an assembly mounted on top of the reaction vessel and having a cylinder and a piston slidably and rotatably received in the cylinder, the cylinder and piston defining a scrubbing liquid chamber which is sealed from the outside. A scrubbing liquid is fed through the scrubbing liquid chamber to a main injection pipe to inject the liquid through a multitude of jet nozzles in the main injection pipe against the inner wall surfaces of the reaction vessel, the main injection pipe being connected to the piston for movement therewith.

Growing community of inventors

Yokohama, Japan

Hisao Takahashi