C01B 32/23
Oxidation
C01B32/23 (Oxidation) appears on 299 US grants and 401 published applications in this corpus.
Search patents in C01B- Granted patents
- 299
- Published applications
- 401
- Assignees
- 212
- Inventors
- 864
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 6 |
| 2009 | 0 | 9 |
| 2010 | 5 | 9 |
| 2011 | 9 | 13 |
| 2012 | 10 | 17 |
| 2013 | 7 | 28 |
| 2014 | 11 | 31 |
| 2015 | 19 | 34 |
| 2016 | 33 | 49 |
| 2017 | 36 | 48 |
| 2018 | 34 | 30 |
| 2019 | 34 | 20 |
| 2020 | 24 | 22 |
| 2021 | 16 | 20 |
| 2022 | 19 | 8 |
| 2023 | 7 | 14 |
| 2024 | 15 | 15 |
| 2025 | 8 | 19 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Graphene oxide, positive electrode for nonaqueous secondary battery using graphene oxide, method of manufacturing positive electrode for nonaqueous secondary battery, nonaqueous secondary battery, and electronic device29 Sep 2026US 12,749,686 B2Semiconductor Energy Laboratory Co.Ltd.
- 2D nanomaterial fiber and method of fabricating the same21 Jul 2026US 12,686,955 B2Korea Advanced Institute of Science and Technology
- Negative electrode active material and preparation method thereof19 May 2026US 12,633,540 B2Contemporary Amperex Technology (Hong Kong) Limited
- Graphene oxide material and method for the production thereof31 Mar 2026US 12,590,003 B2National University of Ireland, Galway
- A method for the production of edge functionalised graphene2 Jul 2026US 2026/0184572 A1Sicona Battery Technologies Pty Ltd
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- Graphene/Alkali Metal Composite Anode, Alkali Metal Battery, and Production Method14 May 2026US 2026/0135082 A1Honeycomb Battery Company
- Reduced graphene oxide film comprising a stack of rgo layers and its applications26 Feb 2026US 2026/0054992 A1Fundació Institut Català De NanocièNcia I Nanotecnologia (Icn2)
- Graphene and power storage device, and manufacturing method thereof5 Feb 2026US 2026/0038831 A1Semiconductor Energy Laboratory Co.Ltd.
Most cited
By later US patents
- Thermally exfoliated graphite oxide96US 7,658,901 B2The Trustees of Princeton University · 2010
- Functional graphene-rubber nanocomposites93US 7,745,528 B2The Trustees of Princeton University · 2010
- Electrospray painted article containing thermally exfoliated graphite oxide and method for their manufacture65US 8,053,508 B2The Trustees of Princeton University · 2011
- Mass production of nano-scaled platelets and products52US 7,785,492 B1Nanotek Instruments, Inc. · 2010
- Process for producing dispersible nano graphene platelets from oxidized graphite51US 8,114,375 B2Nanotek Instruments, Inc. · 2012