Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6710937 | Zooming structure in barrel assembly of zoom camera | Nae-jin Jo | 2004-03-23 |
| 6240254 | Zoom lens barrel driving system for camera | Byung Jun Mun, Yong-Hag Choi, Nae-jin Jo, Jin Hwan Kim | 2001-05-29 |
| 5619741 | Shutter driving system for a camera | Jae Seo | 1997-04-08 |
| 5555059 | Electromagnetic lens shutter apparatus | Jae Seo, Deog-ho Choi | 1996-09-10 |
| 5431820 | Method for treating liquid waste after pulp bleaching | Tomoaki Nishida, Yoshimasa Takahara, Kokki Sakai, Ryuichiro Kondo | 1995-07-11 |
| 5349414 | Aperture-priority lens shutter apparatus for a camera | Jae Seo, Deog-ho Choi | 1994-09-20 |