RC

Raymond Wai Hang Chu

DL Defond Manufacturing Limited: 17 patents #1 of 4Top 25%
DL Defond Componets Limited: 1 patents #21 of 50Top 45%
📍 Sha Tin, CN: #51 of 2,424 inventorsTop 3%
Overall (All Time): #224,829 of 4,157,543Top 6%
20
Patents All Time

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #TitleCo-InventorsDate
8592672 Foldable solar energy collector 2013-11-26
7224558 Method and apparatus for electromechanically interrupting and reconnecting circuits 2007-05-29
6784390 Electrical switch 2004-08-31
6774509 Electrical switch assembly 2004-08-10
6765317 Power supply module for electrical power tools 2004-07-20
6762666 Toroidal core for a toroid 2004-07-13
6759608 Electrical switch 2004-07-06
6741051 Power tool trigger control 2004-05-25
6624991 Circuit breaker 2003-09-23
6605787 Electrical switch 2003-08-12
6483063 Electrical switch including a metal heat sink 2002-11-19
6388408 Motor current sensing in electric power tools 2002-05-14
6340926 Power plug with circuit breaker 2002-01-22
6281482 Electrical switch 2001-08-28
6274828 On-off switch with off position locking actuator 2001-08-14
6130393 Electrical rocker switch 2000-10-10
6118085 Electrical switch 2000-09-12
5815363 Circuit breaker 1998-09-29
5810109 Electrical switch 1998-09-22
4927379 Electrical connector Patrick Wang, Georg Strobl 1990-05-22