C04B 2235/327
Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
C04B2235/327 (Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof) appears on 2,199 US grants and 2,796 published applications in this corpus.
Search patents in C04B- Granted patents
- 2,199
- Published applications
- 2,796
- Assignees
- 1,031
- Inventors
- 5,316
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 9 | 0 |
| 1992 | 9 | 0 |
| 1993 | 3 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 14 | 0 |
| 1998 | 5 | 0 |
| 1999 | 10 | 0 |
| 2000 | 15 | 0 |
| 2001 | 14 | 10 |
| 2002 | 30 | 37 |
| 2003 | 43 | 106 |
| 2004 | 61 | 116 |
| 2005 | 56 | 89 |
| 2006 | 69 | 97 |
| 2007 | 56 | 116 |
| 2008 | 56 | 107 |
| 2009 | 78 | 146 |
| 2010 | 102 | 174 |
| 2011 | 101 | 141 |
| 2012 | 106 | 139 |
| 2013 | 115 | 139 |
| 2014 | 102 | 109 |
| 2015 | 101 | 109 |
| 2016 | 110 | 116 |
| 2017 | 112 | 114 |
| 2018 | 104 | 107 |
| 2019 | 82 | 131 |
| 2020 | 100 | 121 |
| 2021 | 87 | 101 |
| 2022 | 97 | 115 |
| 2023 | 91 | 115 |
| 2024 | 76 | 117 |
| 2025 | 88 | 77 |
| 2026 | 47 | 47 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Annealing separator composition for grain- oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet6 Oct 2026US 12,753,457 B2Posco
- M-type hexaferrite comprising a low dielectric loss ceramic29 Sep 2026US 12,749,604 B2Rogers Corporation
- Synthetic mineral composition, a method of forming a synthetic mineral composition and uses of a synthetic mineral composition15 Sep 2026US 12,735,360 B2Sibelco Nederland N.V.
- Ceramic material of ceramic electrode for tumor treating fields and preparation method thereof15 Sep 2026US 12,735,361 B2Hebei Puni Medical Technology Co., Ltd
- Batch for the production of a coarse ceramic refractory basic product, such product and method for its production, lining of an industrial furnace and industrial furnace25 Aug 2026US 12,715,815 B2Refratechnik Holding GmbH
- Dielectric ceramic, method of preparing the same, and multilayer ceramic capacitor including the same8 Oct 2026US 2026/0311933 A1Samsung Electro-Mechanics Co., Ltd.
- Self-assembled soft magnetic ferrite nanocomposite materials and passive components and methods of making same1 Oct 2026US 2026/0296983 A1University of Pittsburgh—Of the Commonwealth System of Higher Education
- Hearth mixture for disposing on the hearth bottom of an electric arc furnace, use of a hearth mixture for disposing on the hearth bottom of an electric arc furnace, electric arc furnace, method for disposing a hearth mixture on the hearth bottom of an electric arc furnace and use of magnesia spinel used in a lining of a cement rotary kiln24 Sep 2026US 2026/0287256 A1Refractory Intellectual Property GmbH & Co.KG
- Air terminal coating17 Sep 2026US 2026/0275484 A1Lightning Protection International Pty Ltd
- Ceramic particles for use in a solar power tower17 Sep 2026US 2026/0276244 A1Carbo Ceramics Inc.
Most cited
By later US patents
- Combinatorial synthesis of novel materials365US 5,985,356 ASymyx Technologies, Inc. · 1999
- Materials and products using nanostructured non-stoichiometric substances226US 6,344,271 B12002
- Nanotechnology for biomedical products224US 6,572,672 B2NanoProducts Corporation · 2003
- Giant magnetoresistive cobalt oxide compounds218US 5,776,359 ASymyx Technologies, Inc. · 1998
- Lithium ion-conductive solid electrolyte containing lithium titanium phosphate169US 4,985,317 AJapan Synthetic Rubber Co., Ltd. · 1991