P

Inventor

PENNEY STEPHEN JOHN

GB7 patents
⚠️ This page may combine multiple inventors who share the name “PENNEY STEPHEN JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

THORN SECURITY

3 patents
US7843324B2Nov 30, 2010

Detection arrangements

THORN SECURITY14 citations81
US7940190B2May 10, 2011

Smoke detector

THORN SECURITY16 citations80
US6188278B1Feb 13, 2001

Amplification circuits

THORN SECURITY2 citations59

PENNEY STEPHEN JOHN

2 patents
US8559006B2Oct 15, 2013

Particulate detector

PENNEY STEPHEN JOHN5 citations69
US8154415B2Apr 10, 2012

Detector

PENNEY STEPHEN JOHN5 citations53

TYCO FIRE & SECURITY GMBH

2 patents
US11615699B2Mar 28, 2023

Smoke detector availability test

TYCO FIRE & SECURITY GMBH1 citations59
US12424078B2Sep 23, 2025

Addressable safety device with an optically readable and removable addressing mechanism

TYCO FIRE & SECURITY GMBH0 citations57