Mitsubishi Kinzoku Kabushiki Kaisha

Hiroshi Ikeda

Makoto Tsunashima

Masaki Morikawa

Yo Takeuchi

Chuji Tanaka

Akihiko Mieda

Masamitsu Satoh

Toshiharu Hiji

Amorphous silicon powder or film can be prepared by thermally decomposing a perchloropolysilane.

Process for preparing amorphous silicon

Chloropolysilanes can be produced in high yield without forming solid waste materials by contacting silicon materials with chlorine at a temperature of 140.degree..about.300.degree. C. in the presence of copper compound or a mixture thereof.

Process for preparing chloropolysilanes

There is disclosed a method for manufacturing a stripe-patterned metal plate or composite material. Plural kinds of metal sheet blanks having different colors are placed one upon another to provide a layer structure. The metal sheets of the layer structure are bonded to each other directly and metallurgically in a solid state to provide a layer-structured plate. The layer-structured plate is cut in a direction along a face extending at a predetermined angle to a layer face thereof to provide at least one thin metal plate intermediate. The metal plate intermediate is inserted into a complementary hole formed through a solid package of metal. Then, the package containing the metal plate intermediate is hot rolled into a predetermined length with its width remaining substantially unchanged so that the metal plate intermediate is simultaneously extended at a predetermined reduction rate with its width remaining substantially unchanged.

Method for manufacturing stripe-patterned metal plate

Growing community of inventors

Omiya, Japan

Hiroshi Ikeda