Inventor

DUFFY HUGH

US9 patents

⚠️ This page may combine multiple inventors who share the name “DUFFY HUGH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RAYCHEM CORP

6 patents

US5864458AJan 26, 1999

Overcurrent protection circuits comprising combinations of PTC devices and switches

RAYCHEM CORP95 citations96

US5745322AApr 28, 1998

Circuit protection arrangements using ground fault interrupter for overcurrent and overvoltage protection

RAYCHEM CORP60 citations95

US5689395ANov 18, 1997

Overcurrent protection circuit

RAYCHEM CORP86 citations94

US5737160AApr 7, 1998

Electrical switches comprising arrangement of mechanical switches and PCT device

RAYCHEM CORP54 citations92

US5666254ASep 9, 1997

Voltage sensing overcurrent protection circuit

RAYCHEM CORP55 citations92

US4822983AApr 18, 1989

Electrical heaters

RAYCHEM CORP22 citations76

(unassigned)

2 patents

US6181541B1Jan 30, 2001

Transistor-PTC circuit protection devices

48 citations87

US6188556B1Feb 13, 2001

Two-terminal transistor PTC circuit protection devices

5 citations56

TYCO ELECTRONICS CORP

1 patent

US6437955B1Aug 20, 2002

Frequency-selective circuit protection arrangements

TYCO ELECTRONICS CORP55 citations95