Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D761416 | Respiratory mask | — | 2016-07-12 |
| 8136523 | Ventilation mask with continuous seal connected by resilient cushion | — | 2012-03-20 |
| D573709 | Respiratory mask | — | 2008-07-22 |
| D477074 | Mask | Mitchell Keck | 2003-07-08 |
| 6192886 | Nasal mask | — | 2001-02-27 |
| 6082360 | Mask with gel seal | Kelly H. Rudolph | 2000-07-04 |
| D385960 | Nasal mask | — | 1997-11-04 |
| 5538000 | Airflow delivery system | — | 1996-07-23 |
| 5265595 | Mask for breath analysis | — | 1993-11-30 |
| D334633 | Mask | — | 1993-04-06 |
| 5060655 | Pneumotach | — | 1991-10-29 |
| D306086 | Five way respiratory valve | Hans Rudolph | 1990-02-13 |
| D305165 | Two way check respiratory valve | Hans Rudolph | 1989-12-19 |
| D303586 | Three way Y-shaped respiratory valve | Hans Rudolph | 1989-09-19 |
| D301774 | Respiratory mask | Donald C. Zavala | 1989-06-20 |
| D300273 | Four way respiratory valve with dual balloon | Hans Rudolph | 1989-03-14 |
| D300271 | Three-way T-shaped respiratory valve with single balloon | Hans Rudolph | 1989-03-14 |
| D300270 | Four-way T-shaped respiratory valve | Hans Rudolph | 1989-03-14 |
| D300274 | Four way respiratory valve | Hans Rudolph | 1989-03-14 |
| D300272 | Three-way T-shaped respiratory valve with dual balloon | Hans Rudolph | 1989-03-14 |