Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11033649 | Odor control product package and method of forming the same | Daniel D. Phothirath, Stephen A. Heyer | 2021-06-15 |
| 10251966 | Odor control product package and method of forming the same | Daniel D. Phothirath, Stephen A. Heyer | 2019-04-09 |
| D447814 | Portable restroom | Darrin M. Swagel, Paul A. Pilosi, Micah T. Somers, Ronald J. Holmstadt, Daniel J. Koughan +1 more | 2001-09-11 |
| D444570 | Portable restroom | Paul A. Pilosi, Darrin M. Swagel, Ronald J. Holmstadt, Daniel J. Koughan, Dean M. Carstens +2 more | 2001-07-03 |
| 6115971 | Portable restroom | Michael A. Holm | 2000-09-12 |
| 5600348 | Adjustable tip light pen | Paul A. Bartholow | 1997-02-04 |
| D372537 | Facility for physically-challenged individuals | — | 1996-08-06 |
| D357543 | Base for a portable building | Ronald J. Holmstadt, Randy R. Zenner | 1995-04-18 |
| D356851 | Toilet waste tank | Ronald J. Holmstadt, Douglas W. Hart | 1995-03-28 |
| D354142 | Portable restroom | George E. McNamara, Ronald J. Holmstadt, Phillip R. Juaire, Douglas W. Hart, John E. Paul | 1995-01-03 |