C04B 35/2641
Compositions containing one or more ferrites of the group comprising rare earth
Official title: {Compositions containing one or more ferrites of the group comprising rare earth metals and one or more ferrites of the group comprising alkali metals, alkaline earth metals or lead}
C04B35/2641 (Compositions containing one or more ferrites of the group comprising rare earth) appears on 108 US grants and 112 published applications in this corpus.
Search patents in C04B- Granted patents
- 108
- Published applications
- 112
- Assignees
- 57
- Inventors
- 237
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 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 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 0 |
| 2003 | 1 | 3 |
| 2004 | 4 | 8 |
| 2005 | 2 | 6 |
| 2006 | 6 | 3 |
| 2007 | 3 | 8 |
| 2008 | 2 | 1 |
| 2009 | 2 | 10 |
| 2010 | 5 | 4 |
| 2011 | 7 | 6 |
| 2012 | 5 | 10 |
| 2013 | 5 | 4 |
| 2014 | 8 | 6 |
| 2015 | 4 | 4 |
| 2016 | 4 | 1 |
| 2017 | 5 | 1 |
| 2018 | 1 | 3 |
| 2019 | 2 | 9 |
| 2020 | 3 | 7 |
| 2021 | 3 | 5 |
| 2022 | 8 | 3 |
| 2023 | 6 | 3 |
| 2024 | 2 | 5 |
| 2025 | 3 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ferrite sintered magnet and method for manufacturing ferrite sintered magnet12 Aug 2025US 12,387,875 B2TDK Corporation
- High saturation magnetization and high dielectric constant ferrites25 Mar 2025US 12,261,344 B2Skyworks Solutions, Inc.
- Ferrite sintered magnet, ferrite particles, bonded magnet, and rotating electrical machine4 Mar 2025US 12,243,668 B2TDK Corporation
- Materials for ammonia synthesis18 Jun 2024US 12,012,662 B2Ohio State Innovation Foundation
- Ultra-high dielectric constant garnet21 May 2024US 11,987,531 B2Skyworks Solutions, Inc.
- Method for preparing low-temperature sintered high-dielectric constant gyromagnetic ferrite material26 Feb 2026US 2026/0055032 A1Shenzhen Huayang Technology Development Co., Ltd.
- Microwave ferrite material, preparation method therefor and application thereof27 Feb 2025US 2025/0066255 A1Hengdian Group Dmegc Magnetics Co., Ltd
- Preparation method for low-line-width w-type hexagonal crystal system microwave ferrite material26 Dec 2024US 2024/0425416 A1Hengdian Group Dmegc Magnetics Co., Ltd
- Microwave ferrite material for third-order intermodulation circulator and preparation method therefor19 Sep 2024US 2024/0308916 A1Hengdian Group Dmegc Magnetics Co., Ltd
- High-saturation and low-loss bi-component microwave ferrite material, and preparation method therefor and use thereof29 Aug 2024US 2024/0286959 A1Hengdian Group Dmegc Magnetics Co., Ltd
Most cited
By later US patents
- Ceramic membranes for catalytic membrane reactors with high ionic conductivities and low expansion properties91US 6,146,549 AEltron Research, Inc. · 2000
- Inorganic oxide and phosphor53US 7,029,602 B2Matsushita Electric Industrial Co., Ltd. · 2006
- Oxide magnetic material, ferrite particle, sintered magnet, bonded magnet, magnetic recording medium and motor50US 6,139,766 ATDK Corporation · 2000
- Mixed conducting membranes for syngas production46US 6,492,290 B1Air Products and Chemicals, Inc. · 2002
- Tubular solid-state membrane module42US 5,599,383 AAir Products and Chemicals, Inc. · 1997