Other

Sumitomo Chemical Company, Limited

Nichia Kagaku Kogyo K.k.

Tomokazu Suzuki

Akira Hayashi

Hitoshi Toki

Yuichi Yamamura

Takuya Hamada

Shoichi Bando

Katsunori Uchimura

Kazunori Kitagawa

Yoshikatsu Aihara

Yoshiaki Shizuki

Tomoyoshi Kondo

Hirotaro Narabayashi

A phosphor material of the chemical composition formula (Sr , Ca )TiO :Pr,Al, where the value of x&plus;y is in the range 0.001 to 0.05. Another phosphor material has the chemical composition formula SrTiO :Pr,Al, in which the surfaces of phosphor particles are diffused with a diffusing agent containing at least one of Be, Mg, Ca, Sr, and Ba. Still another phosphor material has the chemical composition formula SrTiO :Pr,Al, where Sr/Ti molar ratio is 0.88 to 0.99.

Phosphor material and its method of manufacture

A method of reclaiming a phosphor from a recovered phosphor slurry containing carbon, a bichromate, and polyvinyl alcohol, comprises, (a) a decomposition treatment step of adding an alkali to the recovered phosphor slurry after the slurry is heated to prepare a phosphor suspension having an alkali concentration of 0.5N or less in the slurry, and adding an oxidizing agent in an amount of 1.0 to 20.0 wt % with respect to a dry solid component of the suspension, (b) a weak acid treatment step of separating a phosphor from the suspension, and adding a weak acid to a suspension obtained by adding water to the separated phosphor, thereby adjusting a pH to be 3.0 to 5.0, and (c) a surface treatment step of treating the surface of the phosphor separated from the suspension.

Method of reclaiming phosphor

An antiparkinsonian agent comprising DL- or L-threo-3,4-dihydroxyphenylserine and a decarboxylase inhibitor (e.g. carbidopa and benserazide), which is useful for the treatment of parkinson's disease, particularly treatment of the freezing phenomenon which has not previously been cured by the conventional antiparkinsonian drugs such as L-DOPA.

Antiparkinsonian agent

A method for treating peripheral orthostatic hypotension which comprises administering DL- or L-threo-3,4-dihydroxyphenylserine or a pharmaceutically acceptable acid addition salt thereof to a subject suffering from the disease. The composition may be administered either orally or parenterally.

Pharmaceutical composition and method for treating peripheral

Growing community of inventors

Anan, Japan

Tomokazu Suzuki