Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12252826 | Methods of saturating nonwoven fabrics with liquid and the making of electret thereof | — | 2025-03-18 |
| 6428610 | Hepa filter | Sanjiv R. Malkan | 2002-08-06 |
| 6197709 | Meltblown composites and uses thereof | Charles B. Hassenboehler, Jr., Larry C. Wadsworth, Gretta Heismeyer | 2001-03-06 |
| 6153059 | Composite of pleated and nonwoven webs, method and apparatus for the electrostatic charging of same | Larry C. Wadsworth, Oldrich Jirsak | 2000-11-28 |
| 6090469 | Mechanically interlocked and thermally fused staple fiber pleated and non-pleated webs | Larry C. Wadsworth, Oldrich Jirsak | 2000-07-18 |
| 5955174 | Composite of pleated and nonwoven webs | Larry C. Wadsworth, Oldrich Jirsak | 1999-09-21 |
| 5686050 | Method and apparatus for the electrostatic charging of a web or film | Larry C. Wadsworth | 1997-11-11 |
| 5592357 | Electrostatic charging apparatus and method | Mark S. Rader, Igor Alexeff, Larry C. Wadsworth | 1997-01-07 |
| 5456972 | Method and apparatus for glow discharge plasma treatment of polymer materials at atmospheric pressure | John R. Roth | 1995-10-10 |
| 5414324 | One atmosphere, uniform glow discharge plasma | John R. Roth, Chaoyu Liu, Mounir Laroussi, Paul Spence | 1995-05-09 |
| 5403453 | Method and apparatus for glow discharge plasma treatment of polymer materials at atmospheric pressure | John R. Roth, Larry C. Wadsworth, Chaoya Liu, Paul Spence | 1995-04-04 |
| 5401446 | Method and apparatus for the electrostatic charging of a web or film | Larry C. Wadsworth | 1995-03-28 |
| 5387842 | Steady-state, glow discharge plasma | John R. Roth, Chaoyu Liu | 1995-02-07 |