Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11534632 | Fit-test method for respirator with sensing system | Andrew S. Viner, Richard C. Webb, Nicholas G. Amell, Jessica L. T. Hauge, David R. Stein +5 more | 2022-12-27 |
| 11033763 | Respirator including polymeric netting and method of forming same | Nhat Ha T. Nguyen, Thomas J. Xue, Seyed A. Angadjivand, Ronald W. Ausen, William J. Kopecky +2 more | 2021-06-15 |
| 7131442 | Fibrous filtration face mask | James F. Dyrud | 2006-11-07 |
| 5307796 | Methods of forming fibrous filtration face masks | Roger J. Stumo, James F. Dyrud, Harvey J. Berg | 1994-05-03 |
| 4837067 | Nonwoven thermal insulating batts | Patrick Carey | 1989-06-06 |
| 4769022 | Cleansing pad | Robert W. H. Chang | 1988-09-06 |