Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11280411 | Multi-part valve assembly | Daniel E. Johnson, Starr L. Pitzer, Jr. | 2022-03-22 |
| 10760568 | Multi-part valve assembly | Daniel E. Johnson, Starr L. Pitzer, Jr. | 2020-09-01 |
| 9470226 | Multi-part valve assembly | Daniel E. Johnson, Starr L. Pitzer, Jr. | 2016-10-18 |