Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7622232 | Electrophotographic photoreceptor and electrophotographic imaging apparatus employing the photoreceptor | Seung-ju Kim | 2009-11-24 |
| 7494754 | Electrophotographic photoreceptor containing asymmetric naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the same | Beom Jun Kim, Seung-ju Kim, Kyung-yol Yon, Moto Makino, Ji-Young Lee +1 more | 2009-02-24 |
| 7449270 | Electrophotographic photoreceptor containing naphthalenetetracarboxylic acid diimide derivatives as electron transport materials in charge generating layer and the electrophotographic imaging apparatus using the photoreceptor | Beom Jun Kim, Seung-ju Kim, Kyung-yol Yon, Moto Makino, Hwan-koo Lee +2 more | 2008-11-11 |
| 7432029 | Electrophotographic photoreceptor containing asymmetrical naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the photoreceptor | Seung-ju Kim, Beom Jun Kim, Ji-Young Lee, 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, Beom Jun Kim, 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 | Beom Jun Kim, Seung-ju Kim, Kyung-yol Yon, Hwan-koo Lee | 2008-07-08 |
| 7354534 | Composition for overcoat layer of organophotoreceptor, organophotoreceptor manufactured by employing the same and the electrophotographic imaging apparatus containing the same | Nam-Jeong Lee, Kyung-yol Yon, Hwan-koo Lee, Hae-ree Joo, Boom-jun Kim | 2008-04-08 |
| 7341811 | Electrophotographic photoreceptor using the electron transferring compound | Beom Jun Kim, Seung-ju Kim, Hwan-koo Lee | 2008-03-11 |
| 7314692 | Phenylazomethylene-cyclohexadienone derivatives comprising electron withdrawing group and electrophotographic photoreceptor comprising the derivatives | Beom Jun Kim, Kyung-yol Yon, Hwan-koo Lee, Seung-ju Kim | 2008-01-01 |
| 7291429 | Naphthalenetetracarboxylic acid diimide derivatives and electrophotographic photoconductive material using the derivatives | Beom Jun Kim, Kyung-yol Yon, Hwan-koo Lee, Seung-ju Kim | 2007-11-06 |
| 7217482 | Electrophotographic photoreceptor containing a chelate compound | Beom Jun Kim, Kyung-yol Yon, Hwan-koo Lee, Seung-ju Kim | 2007-05-15 |
| 7172843 | Composition for overcoat layer of organophotoreceptor, organophotoreceptor manufactured by employing the same and the electrophotographic imaging apparatus containing the same | Nam-Jeong Lee, Kyung-yol Yon, Hwan-koo Lee, Hae-ree Joo, Boom-jun Kim | 2007-02-06 |
| 7169519 | Double-layered positively-charged organic photoreceptor | Nam-Jeong Lee, Kyung-yol Yon, Hwan-koo Lee, Hae-ree Joo, Beom Jun Kim | 2007-01-30 |
| 7157196 | Naphthalenetetracarboxylic acid diimide derivatives and electrophotographic photoconductive material having the same | Seung-ju Kim, Kyung-yol Yon, Hwan-koo Lee, Beom Jun Kim | 2007-01-02 |
| 7115346 | Multi-layered electrophotographic positively charged organic photoconductor and manufacturing method thereof | Kyung-yol Yon, Hwan-koo Lee, Hae-ree Joo, Boem-jun Kim, Nam-Jeong Lee | 2006-10-03 |
| 7083883 | Polymer having stilbenquinone structure and electrophotographic photoreceptor containing the same | Beom Jun Kim, Kyung-yol Yon, Hwan-koo Lee | 2006-08-01 |
| 7083886 | Single layered electrophotographic photoreceptor | Hwan-koo Lee, Beam-Jun Kim, Kyung-yol Yon | 2006-08-01 |
| 7078139 | Electrophotographic photoreceptor for wet development | Hwan-koo Lee, Kyung-yoi Yon | 2006-07-18 |
| 7060405 | Naphthoquinone derivative and electrophotographic photoreceptor containing the same | Beom Jun Kim, Kyung-yol Yon, Hwan-koo Lee | 2006-06-13 |
| 7045264 | Single layered electrophotographic photoreceptor | Hwan-koo Lee, Kyung-yol Yon, Beom Jun Kim, 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, Kyung-yol Yon, Hwan-koo Lee, Hae-ree Joo, Beom Jun Kim | 2005-09-27 |
| 6949321 | Double-layered positively-charged organic photoreceptor | Nam-Jeong Lee, Hae-ree Joo, Kyung-yol Yon, Hwan-koo Lee, Beom Jun Kim | 2005-09-27 |
| 6884559 | Electrophotographic imaging method | — | 2005-04-26 |
| 6348290 | Multilayer organic photoconductor including electrically conductive support having specific index of surface area | — | 2002-02-19 |