Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9958478 | Switching apparatus for electrical contact testing | — | 2018-05-01 |
| 9210149 | Method for publicly providing protected electronic documents | Ho B. Chang | 2015-12-08 |
| 9043534 | Mobile data memory with automatic delete function | Ho B. Chang | 2015-05-26 |
| 8870067 | Identification device having electronic key stored in a memory | Ho B. Chang | 2014-10-28 |