Issued Patents All Time
Showing 76–92 of 92 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7441742 | Horizon control structure for washing machine | Ho Cheol Kwon, Il Hyeok Yim, Youn Su Jung, Hack Jai Song | 2008-10-28 |
| 7432029 | Electrophotographic photoreceptor containing asymmetrical naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the photoreceptor | Seung-ju Kim, Ji-Young Lee, Saburo Yokota, Kyung-yol Yon, Moto Makino +1 more | 2008-10-07 |
| 7413836 | Electrophotographic photoreceptor containing asymmetrical naphthalenetetracarboxylic acid diimide derivative as electron transporting material in a charge generating layer and electrophotographic image forming apparatus employing the photoreceptor | Seung-ju Kim, Saburo Yokota, Kyung-yol Yon, Moto Makino, Hwan-koo Lee +1 more | 2008-08-19 |
| 7396624 | Electrophotographic photoreceptor containing naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the same | Seung-ju Kim, Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee | 2008-07-08 |
| 7341811 | Electrophotographic photoreceptor using the electron transferring compound | Saburo Yokota, Seung-ju Kim, Hwan-koo Lee | 2008-03-11 |
| 7314692 | Phenylazomethylene-cyclohexadienone derivatives comprising electron withdrawing group and electrophotographic photoreceptor comprising the derivatives | Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee, Seung-ju Kim | 2008-01-01 |
| 7291429 | Naphthalenetetracarboxylic acid diimide derivatives and electrophotographic photoconductive material using the derivatives | Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee, Seung-ju Kim | 2007-11-06 |
| 7223997 | Thin film transistor array panel | Kyung-Wook Kim, Sung-Man Kim, Byeong-Jae Ahn, Young-Goo Song, Hyang-Shik Kong | 2007-05-29 |
| 7217482 | Electrophotographic photoreceptor containing a chelate compound | Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee, Seung-ju Kim | 2007-05-15 |
| 7169519 | Double-layered positively-charged organic photoreceptor | Nam-Jeong Lee, Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee, Hae-ree Joo | 2007-01-30 |
| 7157196 | Naphthalenetetracarboxylic acid diimide derivatives and electrophotographic photoconductive material having the same | Seung-ju Kim, Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee | 2007-01-02 |
| 7083883 | Polymer having stilbenquinone structure and electrophotographic photoreceptor containing the same | Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee | 2006-08-01 |
| 7060405 | Naphthoquinone derivative and electrophotographic photoreceptor containing the same | Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee | 2006-06-13 |
| 7045264 | Single layered electrophotographic photoreceptor | Saburo Yokota, Hwan-koo Lee, Kyung-yol Yon, Nam-Jeong Lee | 2006-05-16 |
| 6949322 | Composition for forming overcoat layer for organophotoreceptor using polyaminoether and organophotoreceptor employing overcoat layer prepared from the composition | Nam-Jeong Lee, Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee, Hae-ree Joo | 2005-09-27 |
| 6949321 | Double-layered positively-charged organic photoreceptor | Nam-Jeong Lee, Hae-ree Joo, Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee | 2005-09-27 |
| 5866133 | Tanning cosmetics containing Caesapinia sappan L. extract | Jeong-Ha Kim, Kang-Tae Lee, Heong Kwon Jang, Jeong Haeng Kim | 1999-02-02 |