Inventor
FRESCHL DANIEL J
US5 patents
Patents
5 patentsUS10433739B2Oct 8, 2019
Multi-channel photoplethysmography sensor
FITBIT INC49 citations96
US9763584B2Sep 19, 2017
Intermeshing light barrier features in optical physiological parameter measurement device
FITBIT INC6 citations81
US11633117B2Apr 25, 2023
Multi-channel photoplethysmography sensor
FITBIT INC0 citations61
US9757046B2Sep 12, 2017
Intermeshing light barrier features in optical physiological parameter measurement device
FITBIT INC0 citations49
US9743849B2Aug 29, 2017
Intermeshing light barrier features in optical physiological parameter measurement device
FITBIT INC0 citations49