Issued Patents All Time
Showing 1–25 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12139428 | Disk filter for preventing scale formation and water treatment apparatus and method using the same | Hwan Chul Cho, Yang Oh Jin | 2024-11-12 |
| D993986 | Digital audio player | Ji-Sun Kim | 2023-08-01 |
| D975685 | Earphone | — | 2023-01-17 |
| 11274051 | Capacitive-deionization-type nutritive salt removal system and method for use in dam or weir | Hyun Sung Choi, Seog Hyeon Ryu, Jang Yong You, Seok Ho Choi | 2022-03-15 |
| 11180392 | Sequencing batch reactor for sewage treatment and sewage treatment system comprising same | Hwan Chul Cho, Yang Oh Jin, Chul-woo Lee | 2021-11-23 |
| 11001517 | Bioreactor for treating sewage and sewage treatment system comprising the same | Hwan Chul Cho, Yang Oh Jin, Chul-woo Lee | 2021-05-11 |
| 10927024 | Water treatment apparatus for removing nitrogen contained in raw water and water treatment method using the same | Su Nam You, Yang Oh Jin | 2021-02-23 |
| 10626035 | Sequencing batch reactor for sewage treatment and sewage treatment system comprising same | Hwan Chul Cho, Yang Oh Jin, Chul-woo Lee | 2020-04-21 |
| 10586852 | Semiconductor device | Jung Han Lee, Myung-Il Kang, Jae Hwan LEE, Sun-Wook Kim, Sung-Jin Park +2 more | 2020-03-10 |
| 10538824 | Steel sheet and method for producing same | Chun Ku Kang, Jin-Sung Park, Nam Hoon Goo | 2020-01-21 |
| 10494282 | Bioreactor for treating sewage and sewage treatment system comprising the same | Hwan Chul Cho, Yang Oh Jin, Chul-woo Lee | 2019-12-03 |
| 10106865 | Steel sheet and manufacturing method therefor | Jin-Sung Park, Chun Ku Kang, Nam Hoon Goo | 2018-10-23 |
| 10109717 | Semiconductor device and method for fabricating the same | Jung Han Lee, Myung-Il Kang, Jae Hwan LEE, Sun-Wook Kim, Sung-Jin Park +2 more | 2018-10-23 |
| 10041139 | High-strength steel sheet and manufacturing method therefor | Jun Ho Chung, Hyo Dong Shin | 2018-08-07 |
| 9966375 | Semiconductor device | Yong-Joon Choi, Tae-Yong Kwon, Mirco Cantoro, Chang-Jae Yang, Dong-Hoon Khang +7 more | 2018-05-08 |
| 9580786 | High Mn steel sheet for high corrosion resistance and method of manufacturing galvanizing the steel sheet | Il-Ryoung Sohn, Kwang-Geun Chin, Myung-Soo Kim, Sung Kyu Kim | 2017-02-28 |
| 9402001 | Separate billing system for BYOD service and separate billing method for data service | Jae-Hee Shim, Chong Wook Kwon, Yae Ho Kim | 2016-07-26 |
| 9218997 | Electrostatic chuck having reduced arcing | Seok Yul Jun, Bum Jin Park, Sun-il Kim, Hyong Seok Oh, Sung-Chul Cho +5 more | 2015-12-22 |
| 8999085 | High manganese steel strips with excellent coatability and superior surface property, coated steel strips using steel strips and method for manufacturing the steel strips | Kwang-Geun Chin, Hyun-Gyu Hwang, Sung Kyu Kim, Il-Ryoung Sohn, Young Kook Lee +1 more | 2015-04-07 |
| 8221564 | Method for manufacturing high strength steel strips with superior formability and excellent coatability | Il-Ryoung Sohn, Hyun-Gyu Hwang, Seung-bok LEE | 2012-07-17 |
| 6987198 | Acid generator and thin film composition containing the same | Joo-Hyeon Park, Joung Bum Lee | 2006-01-17 |
| 6369143 | Polymer for radiation-sensitive resist and resist composition containing the same | Joo-Hyeon Park, Dong-Chul Seo, Sun-Yi Park | 2002-04-09 |
| 6358666 | Chemically amplified resist composition containing norbornane type low molecular additive | Dong-Chul Seo, Sun-Yi Park, Joo-Hyeon Park | 2002-03-19 |
| 6313327 | Carboxylic acid derivatives and their synthesis method | Dong Seoul Seo, Joo-Hyeon Park, Jae Young Kim | 2001-11-06 |
| 6268106 | Chemically amplified positive photoresist composition | Joo-Hyeon Park, Dong-Chul Seo, Sun-Yi Park | 2001-07-31 |