Casio Computer Co., Ltd.

Nippon Steel Corporation

Naoki Okamura

Junichi Sato

Kazuhiro Takahashi

Hideto Seto

Genki Tsukamoto

Kentaro Maru

A display member including a plate member which has light transparency, a display insertion section which is provided in the plate member such that a front surface thereof is convex and a rear surface corresponding to the convex portion is concave, and a light reaction material which is embedded in the display insertion section emits light in response to light.

Display member and timepiece

A watch part containing a titanium alloy, the titanium alloy, in mass %, includes: Al: 1.0 to 3.5%; Fe: 0.1 to 0.4%; O: 0.00 to 0.15%; C: 0.00 to 0.10%; Sn: 0.00 to 0.20%; Si: 0.00 to 0.15%; and the balance: Ti and impurities, an average grain diameter of &#x3b1; phase crystal grains is 15.0 &#x3bc;m or less, an average aspect ratio of the &#x3b1; phase crystal grains is 1.0 or more and 3.0 or less, and a coefficient of variation of a number density of &#x3b2;-phase crystal grains distributed in the &#x3b1; phase is 0.30 or less.

Watch part

A pointer including a pointer body formed of synthetic resin, and a pointer attachment section formed of a material harder than the synthetic resin and provided in a rotation center portion of the pointer body, in which the pointer attachment section comprises a large-diameter section to which the pointer body is fixed and which includes a positioning section, and a small-diameter section which is provided coaxially with the large-diameter section and to which a pointer shaft is attached.

Growing community of inventors

Tachikawa, Japan

Naoki Okamura