Matsushita Electric Industrial Co., Ltd.

Osaka Gas Company Limited

Shirow Asakawa

Akio Yamashita

Yoshimasa Ito

Reiji Sano

Shunsuke Matsuda

Yukihiro Saito

Katsue Hasegawa

Shoji Shimizu

A high-temperature furnace comprising a gas burner (2) for burning a mixture of air and fuel in a combustion chamber (1), and an oxygen enricher (4). The enricher comprises a plurality of cells (13a) each comprising a pair of spaced apart oxygen permeable membranes (14), and a suction fan (12) for drawing air through the spaces between the cells (13a). The cells (13a) are coupled by a manifold (13b) to a vacuum pump (18) which causes the oxygen molecules of the air to pass through the membranes to increase the oxygen content of the air in the cells (13a), the oxygen-enriched air being drawn by the suction pump (18) to the burner (2). Preferably, a heat exchanger (31) is provided for transferring thermal energy of the emissions from the combustion chamber (1) to the air drawn by the suction fan (12) to maintain the oxygen concentration constant for a given operating condition of the combustion chamber.

High-temperature furnace having selectively permeable membranes for

An electrochromic display device comprising a pair of electrodes which are disposed with a specified space therebetween, at least one of the electrodes being transparent, and a non-aqueous electrolytic solution filled in the space and comprised of a styryl-like compound and a supporting electrolyte dissolved in a solvent, the styryl-like compound being represented by the formula: ##STR1## in which Q represents a benzene ring with or without substituents and/or a condensed ring, R.sub.1 and R.sub.2 independently represent a lower alkyl group, a hydroxyalkyl group or an alkoxyalkyl group, R.sub.3 represents hydrogen, an alkyl group, an alkoxy group, a halogen, a nitrile group, an aromatic group or a phenoxy group, Y represents oxygen or sulfur, Z represents an alkylene group of 2 to 4 carbon atoms, with or without an alkyl substituent, required to complete a ring structure together with ##STR2## and A represents a residue resulting from a condensation reaction of the methyl group of methylene group in the 2-position of a precursor indoline derivative of the formula: ##STR3## where Q, R.sub.1, R.sub.2, R.sub.3, Y and Z have the same meanings as defined above with a member selected from the group consisting of aromatic aldehydes, heterocyclic aldehydes, aromatic nitroso compounds and heterocyclic nitroso compounds.

Electrochromic display device

A light and heat sensitive composition useful particularly in photographic reproduction, the composition comprising a combination of an electron donative material, such as a .pi.-base and an electron acceptive material such as a .pi.-acid both dispersed in an aqueous dispersion medium in the form of discrete particles, at least one of the electron donative and electron acceptive materials being capable of polymerization upon irradiation by actinic light or an actinic corpuscular ray and the materials producing a colored charge transfer complex under predetermined heating conditions.

Light and heat sensitive composition for producing a colored transfer

Growing community of inventors

Zama, Japan

Shirow Asakawa