Mitsubishi Chemical Corporation

Yukihiro Miyamoto

Kentarou Horibe

Tooru Fuse

Masao Miyake

Youji Arita

Hideo Okada

Tadahiro Katsumoto

Harumi Asami

Tomohiro Satou

Takashi Harada

Minoru Soma

Etsuko Miyake, Legal Representative

Jun Saiki

A sintered phosphor-composite having a high internal quantum efficiency and a high transmittance is provided. The object can be achieved with a sintered phosphor-composite including a nitride phosphor and a fluoride inorganic binder, wherein, in cross-sectional observation, the sintered phosphor-composite includes at least a portion in which voids of not more than 1 &#x3bc;m are present in a number of not more than 700 within a cross-sectional area of 0.046 mm, or a portion having a void area fraction of not more than 3% within a cross-sectional area of 0.046 mm.

Sintered phosphor-composite, light-emitting device, lighting device and vehicle indicator lamp

Provided is a sintered phosphor-composite for an LED, having high heat resistance, high thermal conductivity, high luminance, and high conversion efficacy. In addition, there are provided: a light-emitting apparatus which uses the sintered phosphor-composite; and an illumination apparatus and a vehicular headlamp which use the light-emitting apparatus. The sintered phosphor-composite includes a nitride phosphor and a fluoride inorganic binder. The sintered phosphor-composite preferably has an internal quantum efficiency of 60% or more when excited by blue light having a wavelength of 450 nm. Further, the sintered phosphor-composite preferably has a transmittance of 20% or more at a wavelength of 700 nm.

Sintered phosphor, light emitting device, illumination device, vehicle headlamp, and method for manufacturing sintered phosphor

A negative electrode material for a nonaqueous electrolyte rechargeable battery that can stably and efficiently realize a high-performance nonaqueous electrolyte rechargeable battery in which a high discharge capacity, high charge/discharge efficiency at an initial stage and during charge/discharge cycles, and excellent charge/discharge cycle properties are provided as well as electrode expansion in volume after charge/discharge cycles is suppressed. The negative electrode material for a nonaqueous electrolyte rechargeable battery in the form of particles having, at least on the surface thereof, a compound of the phase in which an element Z is present in Si in a non-equilibrium state. The compound is expressed by the general formula SiZM, where Z represents C and/or N, M represents an element other than C and N, and when the concentration of the element Z in a compound SiZ, where each of a and p is an integer, having a composition closest to that of Si and present in an equilibrium state is presumed to be 100 atomic percent, the concentration of the element Z in the compound SiZMis in the range of 10 to 95 atomic percent, and y is in the range of 0 to 0.5.

Nonaqueous electrolyte rechargeable battery, and negative electrode and material thereof

A magnetic recording medium substrate comprising glass, wherein the substrate uniformly recess minute grooves having a length and a width in the range of from 0.001 to 1 &mgr;m on the whole surface and an area percentage of grooves having a length or a width exceeding 1 &mgr;m is at most 0.5% of the glass substrate.

Magnetic recording medium substrate and magnetic recording medium

Growing community of inventors

Chiyoda-ku, Japan

Yukihiro Miyamoto