C04B 35/2683
Other ferrites containing alkaline earth metals or lead
Official title: {Other ferrites containing alkaline earth metals or lead}
C04B35/2683 (Other ferrites containing alkaline earth metals or lead) appears on 127 US grants and 88 published applications in this corpus.
Search patents in C04B- Granted patents
- 127
- Published applications
- 88
- Assignees
- 82
- Inventors
- 316
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 7 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 1 |
| 2003 | 4 | 4 |
| 2004 | 3 | 11 |
| 2005 | 4 | 2 |
| 2006 | 7 | 1 |
| 2007 | 1 | 6 |
| 2008 | 1 | 3 |
| 2009 | 3 | 1 |
| 2010 | 1 | 8 |
| 2011 | 4 | 4 |
| 2012 | 2 | 5 |
| 2013 | 5 | 4 |
| 2014 | 4 | 3 |
| 2015 | 1 | 1 |
| 2016 | 7 | 0 |
| 2017 | 0 | 3 |
| 2018 | 1 | 3 |
| 2019 | 1 | 4 |
| 2020 | 3 | 9 |
| 2021 | 4 | 4 |
| 2022 | 5 | 2 |
| 2023 | 8 | 4 |
| 2024 | 4 | 1 |
| 2025 | 1 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ferrite sintered magnet12 May 2026US 12,626,846 B2TDK Corporation
- Ferrite sintered magnet, ferrite particles, bonded magnet, and rotating electrical machine4 Mar 2025US 12,243,668 B2TDK Corporation
- Polycrystalline 18H hexaferrite, method of manufacture, and uses thereof8 Oct 2024US 12,110,234 B2Rogers Corporation
- Cold sintering ceramics and composites3 Sep 2024US 12,077,478 B2The Penn State Research Foundation
- Composite hexagonal ferrite materials7 May 2024US 11,976,010 B2Allumax TTI, LLC
- Piezoelectric material with perovskite structure for high operating temperatures and its manufacturing process4 Dec 2025US 2025/0368532 A1PI Ceramic GmbH
- Method for manufacturing radio wave absorber, radio wave absorber, and radio wave absorbing article22 May 2025US 2025/0167441 A1FUJIFILM Corporation
- Ferrite particle powder for electromagnetic wave absorption, method for manufacturing same, and resin composition using said ferrite particle powder for electromagnetic wave absorption10 Apr 2025US 2025/0118471 A1Toda Kogyo Corporation
- Piezoelectric ceramic stacked structure16 May 2024US 2024/0164217 A1Korea Atomic Energy Research Institute
- Novel multifferoic r-type hexaferrite, a composite and an article comprising the r-type hexaferrite, and a method of making the same2 Nov 2023US 2023/0352222 A1Rogers Corporation
Most cited
By later US patents
- Finely divided metal oxides and sintered objects therefrom60US 4,065,544 AUnion Carbide Corporation · 1977
- Oxide magnetic material, ferrite particle, sintered magnet, bonded magnet, magnetic recording medium and motor50US 6,139,766 ATDK Corporation · 2000
- Method of hydrothermal liquid phase sintering of ceramic materials and products derived therefrom45US 8,313,802 B2Rutgers, The State University of New Jersey · 2012
- Dense, layered membranes for hydrogen separation39US 7,001,446 B2Eltron Research, Inc. · 2006
- Method for manufacturing magnetic powder for high density magnetic recording33US 4,341,648 ATokyo Shibaura Denki Kabushiki Kaisha · 1982