Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6415450 | Man's underpants with transverse urination opening | — | 2002-07-09 |
| 5453065 | Exerciser with combined stepping and twisting functions | Chih-Jen Lee | 1995-09-26 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6415450 | Man's underpants with transverse urination opening | — | 2002-07-09 |
| 5453065 | Exerciser with combined stepping and twisting functions | Chih-Jen Lee | 1995-09-26 |