C01B 2204/30
Purity
C01B2204/30 (Purity) appears on 65 US grants and 91 published applications in this corpus.
Search patents in C01B- Granted patents
- 65
- Published applications
- 91
- Assignees
- 76
- Inventors
- 225
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2010 | 0 | 2 |
| 2011 | 0 | 4 |
| 2012 | 1 | 2 |
| 2013 | 1 | 3 |
| 2014 | 1 | 1 |
| 2015 | 7 | 3 |
| 2016 | 1 | 4 |
| 2017 | 4 | 2 |
| 2018 | 2 | 4 |
| 2019 | 3 | 10 |
| 2020 | 7 | 16 |
| 2021 | 8 | 13 |
| 2022 | 7 | 8 |
| 2023 | 8 | 3 |
| 2024 | 6 | 8 |
| 2025 | 9 | 5 |
| 2026 | 0 | 3 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Graphenic carbon particles23 Sep 2025US 12,421,118 B2PPG Industries Ohio, Inc.
- Method for the manufacture of reduced graphene oxide from expanded Kish graphite2 Sep 2025US 12,404,179 B2ArcelorMittal
- Dispersible edge functionalised graphene platelets2 Sep 2025US 12,406,992 B2Sicona Battery Technologies Pty Ltd
- Method for preparing phosphorus-doped graphene using phosphorus-containing sludge and biomass29 Jul 2025US 12,371,328 B1Shanxi University
- Graphene powder, and preparation method therefor and application thereof17 Jun 2025US 12,330,945 B2China Petroleum & Chemical Corporation
- Graphene-containing composite structure and manufacturing method of same30 Jul 2026US 2026/0217536 A1National Institute of Technology
- Process for producing a material comprising graphene and/or graphite on a matrix, and materials prepared therefrom16 Apr 2026US 2026/0103385 A1Bio Graphene Solutions Inc.
- Dispersible edge functionalised graphene platelets29 Jan 2026US 2026/0031351 A1Sicona Battery Technologies Pty Ltd
- Graphenic carbon particles20 Nov 2025US 2025/0353749 A1PPG Industries Ohio, Inc.
- Process for producing graphene and/or graphite, and graphene and/or graphite prepared therefrom23 Oct 2025US 2025/0326644 A1Bio Graphene Solutions Inc.
Most cited
By later US patents
- Graphene oxide deoxygenation36US 8,317,984 B2Northrop Grumman Systems Corporation · 2012
- Stable dispersions of single and multiple graphene layers in solution26US 9,045,346 B2Belenos Clean Power Holdings AG · 2015
- Composite materials systems containing carbon and resin21US 10,472,497 B2Lyten, Inc. · 2019
- Stable dispersions of single and multiple graphene layers in solution15US 9,548,494 B2Belenos Clean Power Holding AG · 2017
- Process for the preparation of nano-scaled graphene platelets with a high dispersibility in low-polarity polymeric matrixes and relative polymeric compositions13US 9,139,440 B2Versalis S.P.A. · 2015