Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12349809 | Foldable chair | Te-Lung Chen, Pin-Han Chen | 2025-07-08 |
| 11793306 | Foldable table | Te-Lung Chen, Pin-Han Chen | 2023-10-24 |
| 11659931 | Foldable chair | Te-Lung Chen, Pin-Han Chen | 2023-05-30 |
| 11659930 | Foldable chair | Te-Lung Chen, Pin-Han Chen | 2023-05-30 |
| 7330342 | Safety tester having a high-voltage switching relay protected by an in-line electronic circuit breaker | Roger A. Bald | 2008-02-12 |
| 7026822 | High voltage switching matrix for electrical safety compliance test equipment | Roger A. Bald | 2006-04-11 |
| 6549385 | Test circuit for a withstand voltage tester | Roger A. Bald | 2003-04-15 |
| 6538420 | Automated run test system having built-in high voltage switching matrix for interconnection to a safety compliance testing instrument | Roger A. Bald | 2003-03-25 |
| 6515484 | Electrical test instrument having an improved operator interface | Roger A. Bald | 2003-02-04 |
| 6054865 | Multiple function electrical safety compliance analyzer | Roger A. Bald | 2000-04-25 |
| 6011398 | Current-leakage tester | Roger A. Bald, Chih-Ping Liang | 2000-01-04 |
| 5936419 | Test method and apparatus utilizing reactive charging currents to determine whether a test sample is properly connected | — | 1999-08-10 |
| 5828222 | Quick DC compressive strength test method and the related apparatus | — | 1998-10-27 |
| 5548501 | High-voltage power supply circuit with a voltage discharging circuit | — | 1996-08-20 |