Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11033100 | Versatile shoe cleaning device | — | 2021-06-15 |
| 10058899 | Shoe brush and cleaning device | — | 2018-08-28 |
| 9526196 | Multi-purpose spade having detachable tip | — | 2016-12-27 |
| 8061745 | Multi-purpose spade | — | 2011-11-22 |
| 6486240 | Method for producing an asymmetric support membrane by physical gelation and the membranes obtained thereby | Jong Ok Won, Yong Soo Kang, Un Young Kim, Seong Hyun Yoo | 2002-11-26 |
| 5922104 | Separation membranes prepared from polyamide polymers having 2,2'-bis (trifluoromethyl) biphenyl units and a process of separating gaseous mixtures using them | Jae Sik Na, Yong Soo Kang, Chul J. Lee | 1999-07-13 |
| 5708040 | Method for preparing porous membranes utilizing water or organic vapor adsorption | Jae-Min Hong, Seong Ryong Ha, Yong Soo Kang, Kyu Hong Ahn | 1998-01-13 |
| 5596785 | Multi-utility shoe brush system | — | 1997-01-28 |
| 5061301 | Process for the preparation of surface modified, multilayered, composite membranes for oxygen enrichment and the gas separation membranes | Un Young Kim, Yong Soo Kang, Jae Jin Kim, Sung Wook Song | 1991-10-29 |