Asahi Glass Company, Limited

Hiroshi Usui

Tsuneo Manabe

Hitoshi Onoda

Ryuichi Tanabe

Yuichi Kuroki

Iori Yoshida

Yutaka Segawa

Kazuo Harada

Yoshinori Kon

Katsuaki Miyatani

Osamu Miyahara

Hiroyuki Yamamoto

Kazuo Sunahara

Tomohiro Sakai

Nobuhiro Nakamura

Naoki Sugimoto

Jiro Chiba

Kazunari Watanabe

Yuzuru Tanabe

Syuji Matsumoto

Yoshihisa Beppu

Satoshi Kashiwabara

Yasuko Osaki

Satoshi Fujimine

Katsuyoshi Nakayama

Tetsuro Matsumoto

Eiji Ichikura

Shuji Taguchi

Mitsuru Horie

Arao Nakamura

Yumi Okuyama

Yasuko Dotani

Kenji Mukai

Takaji Shimosaka

Mineyuki Ishida

A diode chip is sealed by a glass material. There are provided a light emitting diode chip and a glass member in close contact with at least one portion of the surface of the light emitting diode chip. The glass member has a surface shape containing a curved surface at least a portion thereof. The curved surface is preferably a portion of a spherical surface or a spheroidal surface. The glass member has a surface shape containing a spherical portion and a flat portion, and the diode chip is preferably disposed on the flat portion.

Glass-sealed light emitting element, circuit board with the glass-sealed light emitting element, and methods for manufacturing those

A method for producing a glass substrate for a magnetic disk by polishing a circular glass plate, which comprises a step of polishing the principal plane of the circular glass plate by using a slurry containing a CeOcrystal powder, the CeOcrystal powder being obtained in such a manner that a melt containing CeOis quenched to obtain an amorphous material, and the amorphous material is subjected to heat treatment to obtain a CeOcrystals-precipitated amorphous material, which is subjected to acid treatment to separate and extract the CeOcrystal powder from the CeOcrystals-precipitated amorphous material.

Method for producing glass substrate for magnetic disk, and magnetic disk

A method for producing a glass substrate for a magnetic disk by polishing a circular glass plate, which comprises a step of polishing the principal plane of the circular glass plate by using a slurry containing at least one water-soluble polymer selected from the group consisting of a water-soluble organic polymer having amino groups, a water-soluble organic polymer having amine salt groups and a water-soluble organic polymer having quaternary ammonium salt groups, and colloidal silica.

Glass substrate for magnetic disk, its production method and magnetic disk

Glass for forming barrier ribs for e.g. a plasma display panel, which consists, as represented by mol % based on the following oxides, essentially of from 24 to 50% of SiO, from 13 to 23% of BO, from 10 to 32% of ZnO, from 3 to 20% of LiO, from 1 to 9% of NaO, from 1 to 15% of AlO, from 0 to 20% of MgO+CaO+SrO+BaO, and from 0 to 9% of BiO, wherein ((BO+ZnO)&#x2014;AlO) is at least 24 mol %; in a case where ZrOis contained, its content is at most 2 mol %; and neither PbO nor F is contained.

Glass for forming barrier ribs, and plasma display panel

A glass ceramic composition which consists essentially of an inorganic material powder having a melting point or a glass transition point of at least 1,000&#xb0; C. and a glass powder having a glass transition point of from 450 to 800&#xb0; C., wherein the average of the major axes L of particles of the above inorganic material powder is from 0.5 to 15 &#x3bc;m, and the average of the ratios L/W of the major axes L to the minor axes W is at most 1.4. Further, a glass ceramic composition which consists essentially of, as represented by mass percentage, from 10 to 58% of an inorganic material powder having a melting point or a glass transition point of at least 1,000&#xb0; C. and from 42 to 90% of a glass powder having a glass transition point of from 450 to 800&#xb0; C., wherein the glass powder consists essentially of, as represented by mol %, SiO: 35 to 70%, BO: 0 to 30%, AlO: 3 to 18%, MgO: 0 to 40%, CaO: 0 to 19%, BaO: 0 to 35% and ZnO: 0 to 9%.

Glass ceramic composition

A sealing composition having at least one member from &agr;-4PbO.B O crystal powder and Pb O powder incorporated in a total amount of from 0.0001 to 3 parts by weight to 100 parts by weight of a composition comprising at least 80 wt % and less than 98.99 wt % of a powder of PbO&mdash;ZnO&mdash;B O &mdash;SiO type crystalline low melting point glass, from 0.01 to 5 wt % of a zircon powder, more than 1 wt % and not more than 19.99 wt % of an &agr;-alumina powder and from 0 to 10 wt % of a low expansion ceramic filler.

Sealing composition

Low melting point glass and glass ceramic composition

A ceramic color composition which comprises from 5 to 40 wt % of a heat-resistant color pigment powder, from 50 to 94.5 wt % of a glass powder, from 0 to 25 wt % of a refractory filler, and from 0.1 to 40 wt % of at least one whisker-like refractory filler selected from the group consisting of aluminum borate whiskers, &agr;-alumina whiskers, potassium titanate whiskers, zinc oxide whiskers, Na,Ca,P,O,whiskers, magnesium oxide whiskers, magnesium borate whiskers, basic magnesium sulfate (MgSO,.5MgO.8H,O) whiskers and titanium diboride whiskers.

Ceramic color composition and process for producing a curved glass plate

A hermetic sealing composition consisting essentially of from 90 to 99.95 wt % of a crystalline low melting glass powder and from 0.05 to 10 wt % of a low expansion ceramic filler powder, and having an average thermal expansion coefficient after firing of from 80.times.10.sup.-7 to 110.times.10.sup.-7 /.degree.C. within a range of from room temperature to 300.degree. C., wherein the crystalline low melting glass consists essentially of:

Hermetic sealing composition

A colored ceramic composition comprising, as inorganic components, from 5 to 40 wt % of a colored heat resistant pigment powder, from 60 to 95 wt % of a powder of zinc-containing glass and from 0 to 10 wt % of a refractory filler powder, wherein said glass consists essentially of the following components:

Colored ceramic composition

A hermetic sealing composition consisting essentially of from 60 to 99 wt % of a bismuth type low melting glass powder and from 1 to 40 wt % of a low expansion ceramic filler powder, wherein the low melting glass has a composition consisting essentially of:

A ceramic color composition comprising from 5 to 34 wt % of a heat resistant color pigment powder, from 65 to 94 wt% of a bismuth type glass powder, from 0 to 10 wt % of a refractory filler powder, and from 0.1 to 20 wt % of at least one additive selected from the group consisting of borides and silicides, as inorganic components.

Ceramic color composition and method for producing a glass sheet

A colored ceramic composition comprising, as inorganic components, from 5 to 40 wt % of a colored heat resistance pigment powder, from 60 to 95 wt % of a zinc-containing glass powder and from 0 to 10 wt % of a refractory filler powder, wherein said glass powder consists essentially of the following components:

Colored ceramic composition and method for producing curved glass plate

A ceramic color composition comprising, as inorganic components, from 5 to 35 wt % of a colored heat resistant pigment powder, from 65 to 95 wt % of a crystalizable glass powder and from 0 to 10 wt % of a refractory filler powder, wherein said glass powder consists essentially of from 10 to 24 wt % of SiO.sub.2, from 60 to 75 wt % of Bi.sub.2 O.sub.3, from 0 to 15 wt % of B.sub.2 O.sub.3, from 0 to 4 wt % of Li.sub.2 O+Na.sub.2 O+K.sub.2 O, from 0 to 15 wt % of BaO and from 0 to 3 wt % of TiO.sub.2.

Ceramic color composition and process for producing a curved surface

Glass having ultrafine particles of CuCl and/or CuBr precipitated therein, which consists essentially of:

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Yokohama, Japan

Hiroshi Usui