| 11344752 |
System and method for monitoring a service life of a filter with a respirator filter sampling port assembly |
Robert Charles Sutton, Frank Ding |
2022-05-31 |
| 11273333 |
Respirator with phase change material |
Alyssa Whitney Sabolis, Amy Elizabeth Quiring, Ethan David Voss, Antti SEPPÄLÄ, Gareth Roberts +3 more |
2022-03-15 |
| 10744352 |
Half facepiece |
Carl Estcourt Tucker, John Slemmen, Gareth Dyfan Evans, Garath Tudor Roberts, Chris Ward +5 more |
2020-08-18 |
| 10576407 |
Method and apparatus for integrating chemical and environmental sensors into an air purification filter through a reusable sensor post |
Frank Ding, Amy Elizabeth Quiring |
2020-03-03 |
| 10556136 |
Half facepiece |
Antti SEPPÄLÄ, Robert Charles Sutton, Amy Elizabeth Quiring |
2020-02-11 |
| 10537755 |
Heat deformable material for face seal |
Ethan David Voss, Alyssa Whitney Sabolis |
2020-01-21 |
| 9504859 |
Method and apparatus for integrating chemical and environmental sensors into an air purification filter through a reusable sensor port |
Frank Ding, Amy Elizabeth Quiring |
2016-11-29 |
| 8979985 |
Conformal split planar flow air purifying filter |
Frank Ding, Edward Powers Simmonds |
2015-03-17 |
| 8402966 |
Air purifying respirator having inhalation and exhalation ducts to reduce rate of pathogen transmission |
Judge W. Morgan, III, Amy Elizabeth Staubs, Sioned Owens, Sean Austerbery, Gareth Roberts +1 more |
2013-03-26 |
| 8328903 |
Determining effluent concentration profiles and service lives of air purifying respirator cartridges |
Amy Elizabeth Staubs, Yuqing Ding |
2012-12-11 |
| 7860662 |
Systems and methods for determining filter service lives |
Yuquing Ding |
2010-12-28 |