Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656368 | Fibrous filtration face mask having corrugated polymeric microfiber filter layer | David L. Braun | 1997-08-12 |
| 5639700 | Thermal insulation containing corrugated nonwoven web of polymeric microfiber | David L. Braun, Raju Venkatapathy | 1997-06-17 |
| 5620545 | Method of making a corrugated nonwoven web of polymeric microfiber | David L. Braun, Raju Venkatapathy | 1997-04-15 |