Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650129 | Light weight silica balls with a dense outer layer and method of making the same | Seok-Jin Oh, Sun Jae Kim, Choong-Hwan Jung, Il-Hyun Kuk | 1997-07-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650129 | Light weight silica balls with a dense outer layer and method of making the same | Seok-Jin Oh, Sun Jae Kim, Choong-Hwan Jung, Il-Hyun Kuk | 1997-07-22 |