Issued Patents All Time
Showing 76–88 of 88 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6681605 | Tubular doorknob with adjustment devices for firmly mounting the tubular doorknob in a door | — | 2004-01-27 |
| 6644077 | Lock structure for bathroom use | — | 2003-11-11 |
| 6568231 | Lock structure for bathroom use | — | 2003-05-27 |
| 6564596 | Door lock assembly with multiple latch devices | — | 2003-05-20 |
| 6364382 | Drawing plate structure of a latch of an auxiliary lock | Mu-Lan Huang | 2002-04-02 |
| 6334635 | Latch bolt mechanism of a tubular lock with adjustable backset by an extension casing | — | 2002-01-01 |
| 6334636 | Remotely controllable lock | Chih-Cheng Huang, Jo-Chiao Wang | 2002-01-01 |
| 6293597 | Tubular lock with a backset adjustable by a follower plate | — | 2001-09-25 |
| 6257630 | Tubular lock with adjustable backset | — | 2001-07-10 |
| 5997794 | Method of making matrix for carbonate fuel cells | Joel Doyon, Chao-Yi Yuh | 1999-12-07 |
| 5869203 | Electrolyte matrix for molten carbonate fuel cells | Chao-Yi Yuh | 1999-02-09 |
| 5826924 | Lock assembly with emergent forcible unlatching from outside | — | 1998-10-27 |
| 4951984 | Door catch | — | 1990-08-28 |