Inventor

VOLLENWEIDER WALTER

CH5 patents

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

VOLLENWEIDER WALTER

2 patents

US8546740B2Oct 1, 2013

Evaluation of a difference signal between output signals of two receiving devices in a sensor apparatus

VOLLENWEIDER WALTER9 citations77

US8994942B2Mar 31, 2015

Method for identifying interference object in scatter volume of optical fire detector and optical fire detector

VOLLENWEIDER WALTER6 citations66

SIEMENS SCHWEIZ AG

2 patents

US10573167B2Feb 25, 2020

Fire detector with a scattered light arrangement

SIEMENS SCHWEIZ AG1 citations58

US11869327B2Jan 9, 2024

Fire or smoke alarm

SIEMENS SCHWEIZ AG0 citations55

LOEPFE MARKUS

1 patent

US8587442B2Nov 19, 2013

Smoke alarm with temporal evaluation of a backscatter signal, test method for the functional capability of a smoke alarm

LOEPFE MARKUS13 citations74