C04B 2235/3281
Copper oxides, cuprates or oxide-forming salts thereof
Official title: Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O
C04B2235/3281 (Copper oxides, cuprates or oxide-forming salts thereof) appears on 805 US grants and 1,031 published applications in this corpus.
Search patents in C04B- Granted patents
- 805
- Published applications
- 1,031
- Assignees
- 383
- Inventors
- 2,115
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 2 |
| 2002 | 9 | 10 |
| 2003 | 12 | 59 |
| 2004 | 28 | 45 |
| 2005 | 26 | 31 |
| 2006 | 36 | 29 |
| 2007 | 20 | 43 |
| 2008 | 23 | 33 |
| 2009 | 35 | 49 |
| 2010 | 29 | 61 |
| 2011 | 40 | 55 |
| 2012 | 37 | 56 |
| 2013 | 40 | 46 |
| 2014 | 28 | 44 |
| 2015 | 45 | 50 |
| 2016 | 45 | 45 |
| 2017 | 44 | 45 |
| 2018 | 45 | 43 |
| 2019 | 32 | 29 |
| 2020 | 34 | 47 |
| 2021 | 23 | 32 |
| 2022 | 42 | 49 |
| 2023 | 33 | 42 |
| 2024 | 26 | 44 |
| 2025 | 31 | 26 |
| 2026 | 11 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Magnetic ball11 Aug 2026US 12,703,666 B2Saint-Gobain Centre De Recherches Et D ' Etudes Europeen
- Development of high power textured piezoelectric ceramics with ultrahigh electromechanical properties for large driving field applications30 Jun 2026US 12,668,548 B2The Penn State Research Foundation
- Zirconia powder, zirconia sintered body, and method for producing zirconia sintered body28 Apr 2026US 12,612,338 B2Daiichi Kigenso Kagaku Kogyo Co., Ltd.
- Methods and systems for measurement of nonthermal far infrared radiation28 Apr 2026US 12,613,140 B2
- Zirconia powder, zirconia sintered body, and method for producing zirconia sintered body21 Apr 2026US 12,606,489 B2Daiichi Kigenso Kagaku Kogyo Co., Ltd.
- Multi-doped garnet electrolytes27 Aug 2026US 2026/0253946 A1Ion Storage Systems, Inc.
- Zirconia composite sintered body and method for producing same20 Aug 2026US 2026/0242293 A1Kuraray Noritake Dental Inc.
- Dvc for a smelting furnace lining16 Jul 2026US 2026/0200800 A1
- Dielectric composition with high-temperature stability9 Jul 2026US 2026/0193137 A1Amotech Co., Ltd.
- Dielectric composition with high-temperature stability and stacked ceramic capacitor comprising same9 Jul 2026US 2026/0196412 A1Amotech Co., Ltd.
Most cited
By later US patents
- Very high purity fine powders and methods to produce such powders142US 6,569,397 B12003
- Al2O3-Y2O3-ZrO2/HfO2 materials, and methods of making and using the same131US 7,507,268 B23M Innovative Properties Company · 2009
- Non-frangible alumina-silica fibers117US 4,047,965 AMinnesota Mining and Manufacturing Company · 1977
- High purity fine metal powders and methods to produce such powder117US 6,786,950 B2NanoProducts Corporation · 2004
- Method of making amorphous materials and ceramics111US 7,168,267 B23M Innovative Properties Company · 2007