| 11413190 |
Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers |
Kristina M. Magnusson, Britton G. Billingsley |
2022-08-16 |
| 11324633 |
Welding helmet having a filter arrangement |
Kristina M. Magnusson |
2022-05-10 |
| 11160687 |
Vision-protective headgear with automatic darkening filter comprising an array of switchable shutters |
Britton G. Billingsley, Kristina M. Magnusson |
2021-11-02 |
| 11129748 |
Curved eye protection shield for welding protection |
Kristina M. Magnusson, Laurent Froissard, Britton G. Billingsley |
2021-09-28 |
| 10866442 |
Curved, arcuately-bonded liquid crystal cell and method of making |
Kristina M. Magnusson, Louise L. M. Madsen, Larissa Zuravskaja |
2020-12-15 |
| 10821026 |
Welding protector with magnifying cover |
Kristina M. Magnusson, Britton G. Billinglsey, Christopher M. Brown, Timothy L. Wong, John M. Kruse +2 more |
2020-11-03 |
| 10758420 |
Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers |
Kristina M. Magnusson, Britton G. Billingsley |
2020-09-01 |
| 10667952 |
Welding helmet having a filter arrangement |
Kristina M. Magnusson |
2020-06-02 |
| 10426667 |
Automatic darkening filter apparatus and method |
Kristina M. Magnusson |
2019-10-01 |
| 10114242 |
Curved automatic-darkening filter |
Kristina M. Magnusson, Britton G. Billingsley, Larissa Zuravskaja, Joy L. Manske |
2018-10-30 |
| 9254226 |
Automatic welding filter with tunable spectral transmission |
Kristina M. Magnusson |
2016-02-09 |
| 7884888 |
Automatic darkening filter with offset polarizers |
Kristina M. Magnusson, Per-Olav Dahlin |
2011-02-08 |
| 7477330 |
Automatic darkening filter with offset polarizers |
Kristina M. Magnusson, Per-Olav Dahlin |
2009-01-13 |
