Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11655418 | Ultra purified pitch process | David C. Boyer, Richard D. Stone | 2023-05-23 |
| 11319491 | Pitch process | David C. Boyer | 2022-05-03 |
| 11193070 | Seeded mesophase pitch process | David C. Boyer | 2021-12-07 |
| 10731084 | Pitch process | Donald P. Malone, David C. Boyer | 2020-08-04 |
| 8278363 | Fischer-tropsch reactions using heat transfer tubes with a catalyst layer on the outside surfaces | — | 2012-10-02 |
| 6350289 | Two-zone molten metal hydrogen-rich and carbon monoxide-rich gas generation process | Donald P. Malone | 2002-02-26 |
| 6284214 | Low or no slag molten metal processing of coke containing vanadium and sulfur | Donald P. Malone | 2001-09-04 |
| 6241806 | Recovering vanadium from petroleum coke as dust | Donald P. Malone | 2001-06-05 |
| 6235253 | Recovering vanadium oxides from petroleum coke by melting | Donald P. Malone | 2001-05-22 |
| 6231640 | Dissolving petroleum coke in molten iron to recover vanadium metal | Donald P. Malone | 2001-05-15 |
| 6110239 | Molten metal hydrocarbon gasification process | Donald P. Malone, Charles Benjamin Miller | 2000-08-29 |
| 5987776 | Process for drying and solvent-extraction of water wet solids | Theodore D. Trowbridge | 1999-11-23 |
| 5518621 | Process for drying and solvent extraction of contaminated water-wet soils, sediments, and sludges | Theodore D. Trowbridge, Charles T. Rawlinson | 1996-05-21 |
| 5256251 | Process for drying and solvent-extraction of solids and sludges | — | 1993-10-26 |
| 4929799 | Isomerization process | Thomas C. Sager, Warren K. Volles, Andrew S. Zarchy | 1990-05-29 |
| 4476345 | N-Paraffin-isoparaffin separation process using wash of recycle purge gas | Robert L. Gray | 1984-10-09 |
| 4210771 | Total isomerization process | — | 1980-07-01 |