Patents
US 11958056 B2: Upgraded coal
- Granted
- 2024-04-16
- Filed
- 2021-08-25 application 17445870
- Type
- Utility · 19 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
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: PVGPATDIS, file of 2026-04-10 (ipg240416.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Energy & Environmental Research Center 68 patents | US company or organization | Portland, ND | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Alexander Azenkeng | Portland, ND | 3 | PVGPATDIS, file of 2026-04-10 | |
| Jason D. Laumb | Portland, ND | 4 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B03B | Separating solid materials using liquids or using pneumatic tables or jigs | B03B9/005 | PVGPATDIS, file of 2026-04-10 |
| C01B | Non-metallic elements; compounds thereof; ; metalloids or compounds thereof not covered by subclass c01c | C01B32/184 | PVGPATDIS, file of 2026-04-10 |
| C09K | Materials for miscellaneous applications, not provided for elsewhere | C09K11/65 | PVGPATDIS, file of 2026-04-10 |
| C10L | Fuels not otherwise provided for; natural gas; synthetic natural gas obtained by processes not covered by subclasses c10g or c10k; liquified petroleum gas; use of additives to fuels or fires; fire-lighters | C10L9/02 | PVGPATDIS, file of 2026-04-10 |
| B82Y | Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures | B82Y20/00 | PVGPATDIS, file of 2026-04-10 |
| C01P | Indexing scheme relating to structural and physical aspects of solid inorganic compounds | C01P2004/64 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2021-09-02 | Assignment Assignment of assignor's interest | AZENKENG, ALEXANDER signed 2020-10-15 LAUMB, JASON signed 2020-10-20 | ENERGY AND ENVIRONMENTAL RESEARCH CENTER FOUNDATION GRAND FORKS, ND | 57372/950 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.