Daelim Chemical Co., Ltd.

Electronics and Telecommunications Research Institute

Hyundai Motor Company

Kia Motors Corporation

Hong Hyun Shin

Sunghoon Hong

In-Kyu You

Yong Suk Yang

Jae Young Choi

Sang Don Lee

Jong Bum Oh

Kyung Hun Hwang

Gyeong Hyeon Gim

Bonjin Koo

Ssang Soo Han

Chun Ho Kong

An extruder for a metal material includes a cylinder having a receiving space in which a solid metal material is provided, a nozzle extending from a lower end of the cylinder, an upper coil provided on an outer surface of the cylinder and melting the solid metal material to form a liquid metal material, and a first lower coil provided on an outer surface of the nozzle to control an extruded shape of the liquid metal material.

Extruder for metal material and 3D printer using the same

Provided is a noble metal material for 3D printing, the noble metal material including an alloy that contains gold (Au) and a first metal that is different from the gold, wherein the alloy contains about 50 wt % to about 100 wt % of the gold and contains more than about 0 wt % and at most about 50 wt % of the first metal, and the melting point of the alloy is at most 400&#xb0; C.

Noble metal material for 3-dimensional printing, method for manufacturing the same, and method for 3-dimensional printing using the same

Provided is a metal material for 3D printing, the metal material including an alloy that includes a eutectic metal, and a metal particle, wherein the melting point of the alloy is about 100&#xb0; C. to about 300&#xb0; C., and the melting point of the metal particle exceeds about 300&#xb0; C.

Metal material for 3-dimensional printing, method for manufacturing the same, and method for 3-dimensional printing using the same

Provided is a method of controlling a hybrid electric vehicle capable of improving acceleration response upon kick-down. The method includes calculating a rising gradient of a motor speed increasing during kick-down shift based on a present speed of a motor for driving the vehicle which is detected at a control unit in real time, upon detection of demand of kick-down shift due to acceleration operation of a driver, calculating a falling gradient of intervention torque based on the rising gradient of the motor speed at the control unit, determining an entry point of intervention control based on the present speed of the motor detected at the control unit in real time, and performing torque intervention control for controlling driving of the motor in order to output intervention torque, namely, motor torque decreased based on the falling gradient of intervention torque calculated from the determined entry point at the control unit.

Method of controlling hybrid electric vehicle

Provided are a high refractive (meth)acrylate derivative and a method or preparing the same, and more particularly, a novel high refractive (meth)acrylate derivative having a high refractive index, capable of being used in a display component material such as an optical film, and a method for preparing the same.

High refractive (meth)acrylate derivative and method for preparing the same

Growing community of inventors

Seoul, South Korea

Hong Hyun Shin