Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7923358 | Methods for preparation of high-purity polysilicon rods using a metallic core means | Kyung Koo Yoon, Yong Ki Park, Won Choon Choi, Sang Jin Moon | 2011-04-12 |
| 7771687 | Method for preparing granular polycrystalline silicon using fluidized bed reactor | Kyung Koo Yoon, Yong Ki Park, Won Choon Choi | 2010-08-10 |
| 7718840 | Process for production of light olefins from hydrocarbon feedstock | Sun Choi, Yong Seung Kim, Deuk Soo Park, Suk Joon Kim, Il Mo Yang +5 more | 2010-05-18 |
| 7663013 | Solid acid catalyst for producing light olefins and process using the same | Sun Choi, Deuk Soo Park, Suk Joon Kim, Ahn Choi, Yong Ki Park +4 more | 2010-02-16 |
| 7601663 | Solid acid catalyst for producing light olefins and process using the same | Sun Choi, Deuk Soo Park, Suk Joon Kim, Ahn Choi, Yong Ki Park +4 more | 2009-10-13 |
| 7488700 | Hydrothermally stable microporous molecular sieve catalyst and preparation method thereof | Sun Choi, Yong Seung Kim, Deuk Soo Park, Suk Joon Kim, Il Mo Yang +5 more | 2009-02-10 |
| 6395248 | Process for preparing polysilicon using exothermic reaction | — | 2002-05-28 |
| 6007869 | Process for preparing highly pure silicon granules | Franz Schreieder | 1999-12-28 |
| 5382412 | Fluidized bed reactor heated by microwaves | Yong Mann Song, Jong Yeol Jeon, Dae H. Kwon, Kang M. Lee, Jae-Seob Lee +1 more | 1995-01-17 |
| 5374413 | Heating of fluidized bed reactor by microwaves | Yong Mann Song, Jong Yeol Jeon, Dae H. Kwon, Kang M. Lee, Jae-Seob Lee +1 more | 1994-12-20 |
| 5346141 | Method for pulverizing silicon particles by fluid jet energy | Dae H. Kwon, Yong Mann Song, Sung-Wook Kim, Jong Yeol Jeon, Kang M. Lee +1 more | 1994-09-13 |