Other

Taebaek Security Consulting Inc.

Young Bae Kwon

Seung Won Kim

Sang Won Choi

Won Sik Oh

Eal Young Ryu

Oh Yun Kwon

Kang Su Lim

Ho Jin Lim

Jun Hui Cho

The invention relates to an electronic security bag controlled by a mobile phone, whereby the bag performs Bluetooth communication with the mobile phone of a person who carries the bag, sounds an alarm when the Bluetooth communication is disconnected (when not in a paring mode), and gives an electric shock to an authorized person who touches the bag by allowing high-voltage current applied from power supply of the security bag to flow entirely in the bag. The bag providing a control method through paring with the mobile phone can safely manage important information assets by remotely controlling the alarm of the bag and locking/unlocking thereof. Further, when separated a predetermined distance from a manager, the security bag transmits a warning signal to the mobile phone, sounds the alarm of the bag, and generates high-voltage current on the bag when forcibly opened, thereby preventing security documents from being stolen.

Electronic security bag controlled by mobile phone

Disclosed is a novel method for producing an expanded graphite which can be utilized for oil adsorbents, gaskets, packing sheets, adsorbents of volatile organic compounds and the like. SO,-graphite interlayer compound is formed by contacting graphite particles with SO,generated from fuming sulfuric acid or anhydrous sulfuric acid. Excessive SO,condensed on SO,-graphite interlayer compound is separated. Then, energy is applied to SO,-graphite interlayer compound to expand the graphite. An acid containing a single component can be continuously reused thus reducing the amount of the acid to {fraction (1/10)}-{fraction (1/100)} of that of an acid mixture used in the conventional method. As a result, the generation of a large amount of environmentally hazardous acid waste can be markedly reduced. Further, the concentration of sulfur remained in the expanded graphite also can be reduced, largely eliminating the corrosive effect of the expanded graphite onto metals when used for gaskets, packing sheets and the like.

Method for producing expanded graphite

Growing community of inventors

Yongin-si, South Korea

Young Bae Kwon