Roos; Charles D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Roos; Charles D..The latest application filed is for "concentrating rare earth elements from coal waste".
- Roos; Charles D. - New York NY
| Patent | Date |
|---|---|
| Concentrating rare earth elements from coal waste Grant 11,123,772 - Roos , et al. September 21, 2 | 2021-09-21 |
| Concentrating Rare Earth Elements From Coal Waste App 20190358677 - Roos; Charles E. ; et al. | 2019-11-28 |
| Multi-fractional coal sorter and method of use thereof Grant 9,114,433 - Roos , et al. August 25, 2 | 2015-08-25 |
| Multi-Franctional Coal Sorter and Method of Use Thereof App 20130184853 - Roos; Charles E. ; et al. | 2013-07-18 |
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