Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9631137 | Ceramic particles and process for making the same | Kevin R. Dickson, Walter T. Stephens | 2017-04-25 |
| 9422719 | Roofing granules comprising base particles that are sintered and have an initial reflectance of at least 0.25 | Ming Liang Shiao, Jennifer A. Millberg | 2016-08-23 |
| 9074124 | Ceramic particles and methods for making the same | Walter T. Stephens, Kevin R. Dickson, Ian Jaeger, Danny Louis Mickelson, Suchira Sen +1 more | 2015-07-07 |
| 8722140 | Solar heat-reflective roofing granules, solar heat-reflective shingles, and process for producing the same | Ming Liang Shiao, Husnu M. Kalkanoglu, Walter T. Stephens | 2014-05-13 |
| 8722188 | Ceramic particle comprising an alumina crystalline phase | Laurie San-Miguel, Kevin R. Dickson, Walter T. Stephens | 2014-05-13 |
| 8283271 | High strength proppants | Laurie San-Miguel, Kevin R. Dickson, Walter T. Stephens | 2012-10-09 |
| 7976949 | High strength ceramic elements and methods for making and using the same | Kevin R. Dickson, Walter T. Stephens | 2011-07-12 |