Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10532900 | Method of reducing silicosis caused by inhalation of silica-containing proppant, such as silica sand and resin-coated silica sand, and apparatus therefor | Scott S. STUTZMAN, David S. BALTHASER | 2020-01-14 |
| 9688492 | Method of reducing silicosis caused by inhalation of silica-containing proppant, such as silica sand and resin-coated silica sand, and apparatus therefor | Scott S. STUTZMAN, David S. BALTHASER | 2017-06-27 |
| 9505569 | Method of reducing silicosis caused by inhalation of silica-containing proppant, such as silica sand and resin-coated silica sand, and apparatus therefor | Scott S. STUTZMAN, David S. BALTHASER | 2016-11-29 |
| 8636832 | Method of reducing silicosis caused by inhalation of silica-containing proppant, such as silica sand and resin-coated silica sand, and apparatus therefor | Scott S. STUTZMAN, David S. BALTHASER | 2014-01-28 |
| 8562720 | Method of reducing silicosis caused by inhalation of silica-containing proppant, such as silica sand and resin-coated sand, and apparatus therefor | Scott S. STUTZMAN, David S. BALTHASER | 2013-10-22 |