Upgraded coal
US11958056B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Aug 25, 2021 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | Jan 25, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L2290/20
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Upgraded coal, method of forming the same, and graphene films and quantum dots made therefrom. A method of upgrading coal includes cleaning coal to form a cleaned coal residue. The method also includes (A) reacting the cleaned coal residue with an oxidizable inorganic metallic agent, or (B) reacting the cleaned coal residue with a reducing agent, or a combination thereof, to form the upgraded coal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.