Asahi Glass Company, Limited

Jiro Nishihama

Tsunehiko Sugawara

Yasumasa Kato

Koji Nakagawa

Takashi Tsukamoto

Taroh Uchiyama

Yukio Yoshikawa

Shunichi Samejima

Kazushige Yoda

Masaaki Takata

Keiji Notsu

Nobuo Kageyama

Maya Hatano

Susumu Otaguro

Makoto Narita

To provide a tempered glass sheet having a thickness of from 1.8 to less than 2.5 mm, which is capable of satisfying the fragmentation quality and impact strength quality required for windowpanes for automobiles. A tempered glass sheet having a first surface, a second surface opposed to the first surface and a side surface connecting the first and second surfaces, and having a thickness of from 1.8 to less than 2.5 mm, wherein at the first surface, the average value of the surface compressive stress is within a range of from 100 to 160 MPa, and the average value of the surface strength is within a range of from 220 to 400 MPa.

Tempered glass sheet

A thermal treatment system for semiconductors comprises an outer tube made of silicon carbide, a base hermetically supporting a lower portion of the outer tube, a lid selectively opening and closing an opening formed in a central portion of the base, and a reactor wall surrounding an outer peripheral wall and the like of the outer tube and having a heater provided on an inner side, wherein an annular sealing member and an annular supporting member are interposed between the outer tube and the base, and wherein the supporting member has an effective heat transfer coefficient of 50 to 2,000 W/(m&#xb7;K).

Thermal treatment system for semiconductors

A vacuum envelope for display which reduces a stress and a deflection in a screen area of a panel face portion and has a light weight and which is suitable for a cathode ray tube or a field emission display, wherein the screen area is composed of a complex layer member comprising a glass layer as an inner layer and a transparent resin as an outer layer, and the proportion of the Young's modulus of the transparent resin to the Young's modulus of the glass layer is {fraction (1/10)}-&frac15;.

Vacuum envelope for a display device

A pair of annular end plates and a plurality of bars which are made of silicon carbide are formed in an integrally coupled/joined structure, having an entire length of not less than 800 mm. The end plates are unitary annular plates. Padding of silicon carbide is formed at a coupled/joined portion between an end plate and a bar so that the coupled/joined portion exhibits an obtuse corner.

Vertical wafer boat

A low pressure CVD system comprising an inner tube having an upper end and a lower end opened, and made of a silicon carbide material, an outer tube including a circumferential wall surrounding an outer periphery of the inner tube with a predetermined spacing, an upper wall closing an upper end of the circumferential wall and a flange provided at a lower portion thereof, the outer tube having a lower end opened, a base portion for supporting the inner tube and the outer tube at the lower ends thereof, and for providing hermetic sealing between the lower end of the outer tube and the base portion, the base portion having a central portion formed with an opening, a lid provided for opening and shutting the opening in the base portion, and a furnace wall surrounding the circumferential wall and the upper wall of the outer tube, the furnace wall having a heater arranged on an inner side thereof wherein the outer tube is made of a silicon carbide material, and padding of a silicon carbide material is formed at a corner of a joined portion between the circumferential wall and the flange of the outer tube.

Low pressure CVD system

Growing community of inventors

Chiyoda-ku, Japan

Jiro Nishihama