HD

Hugh Duffy

RL Raychem Limited: 6 patents #105 of 928Top 15%
TC Tyco Electronics Co.: 1 patents #700 of 1,364Top 55%
📍 Cupertino, CA: #1,748 of 6,989 inventorsTop 30%
🗺 California: #66,801 of 386,348 inventorsTop 20%
Overall (All Time): #588,238 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
6437955 Frequency-selective circuit protection arrangements John Midgley, Brian Thomas 2002-08-20
6188556 Two-terminal transistor PTC circuit protection devices Shukri Souri, Chris McCoy, Adrian I. Cogan, Ram Gopal Bommakanti 2001-02-13
6181541 Transistor-PTC circuit protection devices Shukri Souri, Adrian I. Cogan, Mark Munch, Nick Nickols 2001-01-30
5864458 Overcurrent protection circuits comprising combinations of PTC devices and switches Justin Chiang, John Midgley 1999-01-26
5745322 Circuit protection arrangements using ground fault interrupter for overcurrent and overvoltage protection Justin Chiang, John Midgley, Brian Thomas 1998-04-28
5737160 Electrical switches comprising arrangement of mechanical switches and PCT device 1998-04-07
5689395 Overcurrent protection circuit Craig Wynn, St. Elmo Nickols, III, Brian Thomas 1997-11-18
5666254 Voltage sensing overcurrent protection circuit Brian Thomas 1997-09-09
4822983 Electrical heaters Robert J. Bremner, Burton E. Miller 1989-04-18