Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12227698 | Method of multi-stage fracturing of subterranean formation and slurry for that method | Anne Oberlink, Robert Jewell, Tristana Duvallett, Lance Cook, Lev Ring | 2025-02-18 |
| 11631349 | Light box and light box group therewith | — | 2023-04-18 |
| 11560334 | Concrete repair coating | Robert Jewell, Anne Oberlink, Tristana Duvallet | 2023-01-24 |
| 10457859 | Proppant for use in hydraulic fracturing to stimulate a well | Anne Oberlink | 2019-10-29 |
| 9284226 | Cementitious compositions | Peter Shelley Mills, Robert F. Rathbone, Robert Jewell | 2016-03-15 |
| 8986444 | Hybrid cement clinker and cement made from that clinker | Tristana Duvallet, Robert F. Rathbone, Yongmin Zhou | 2015-03-24 |
| 7963398 | Method for hydraulically separating carbon and classifying coal combustion ash | John Groppo | 2011-06-21 |
| 6533848 | Technology and methodology for the production of high quality polymer filler and super-pozzolan from fly ash | John Groppo | 2003-03-18 |
| 5817230 | Method for improving the pozzolanic character of fly ash | John Groppo, Charles J. McCormick | 1998-10-06 |