Inventor
MAGNUSSON KRISTINA M
SE13 patents
⚠️ This page may combine multiple inventors who share the name “MAGNUSSON KRISTINA M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
3M INNOVATIVE PROPERTIES CO
12 patentsUS7477330B2Jan 13, 2009
Automatic darkening filter with offset polarizers
3M INNOVATIVE PROPERTIES CO33 citations89
US7884888B2Feb 8, 2011
Automatic darkening filter with offset polarizers
3M INNOVATIVE PROPERTIES CO13 citations80
US11160687B2Nov 2, 2021
Vision-protective headgear with automatic darkening filter comprising an array of switchable shutters
3M INNOVATIVE PROPERTIES CO2 citations72
US10758420B2Sep 1, 2020
Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers
3M INNOVATIVE PROPERTIES CO2 citations72
US10426667B2Oct 1, 2019
Automatic darkening filter apparatus and method
3M INNOVATIVE PROPERTIES CO4 citations71
US10114242B2Oct 30, 2018
Curved automatic-darkening filter
3M INNOVATIVE PROPERTIES CO3 citations69
US11413190B2Aug 16, 2022
Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers
3M INNOVATIVE PROPERTIES CO1 citations61
US11324633B2May 10, 2022
Welding helmet having a filter arrangement
3M INNOVATIVE PROPERTIES CO0 citations61
US10821026B2Nov 3, 2020
Welding protector with magnifying cover
3M INNOVATIVE PROPERTIES CO1 citations59
US11129748B2Sep 28, 2021
Curved eye protection shield for welding protection
3M INNOVATIVE PROPERTIES CO0 citations51
US9254226B2Feb 9, 2016
Automatic welding filter with tunable spectral transmission
3M INNOVATIVE PROPERTIES CO1 citations50
US10866442B2Dec 15, 2020
Curved, arcuately-bonded liquid crystal cell and method of making
3M INNOVATIVE PROPERTIES CO0 citations32