Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5151151 | Pleating machine for dual fluted shade | Joseph C. Hsu | 1992-09-29 |
| 4999073 | Honeycomb pleater | Joseph C. Hsu | 1991-03-12 |
| 4890775 | Apparatus for making deep flute shade | Joseph C. Hsu | 1990-01-02 |
| 4871006 | Dual fluted shade | Joseph C. Hsu | 1989-10-03 |
| 4795515 | Process and equipment for making hexagon insulating shade | Joseph C. Hsu | 1989-01-03 |