H01F 1/40
Of magnetic semiconductor materials
Official title: of magnetic semiconductor materials, e.g. CdCr2S4 (devices using galvano-magnetic or similar effects H10N50/00)
H01F1/40 (Of magnetic semiconductor materials) appears on 160 US grants and 164 published applications in this corpus.
Search patents in H01F- Granted patents
- 160
- Published applications
- 164
- Assignees
- 116
- Inventors
- 466
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 3 |
| 2002 | 8 | 3 |
| 2003 | 5 | 10 |
| 2004 | 6 | 12 |
| 2005 | 8 | 8 |
| 2006 | 7 | 13 |
| 2007 | 7 | 13 |
| 2008 | 7 | 12 |
| 2009 | 9 | 12 |
| 2010 | 5 | 9 |
| 2011 | 6 | 17 |
| 2012 | 9 | 4 |
| 2013 | 6 | 6 |
| 2014 | 3 | 8 |
| 2015 | 7 | 3 |
| 2016 | 5 | 1 |
| 2017 | 4 | 1 |
| 2018 | 3 | 6 |
| 2019 | 3 | 2 |
| 2020 | 6 | 4 |
| 2021 | 3 | 7 |
| 2022 | 2 | 4 |
| 2023 | 5 | 5 |
| 2024 | 3 | 1 |
| 2025 | 5 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Ferrite particle, carrier core material for electrophotographic developer, carrier for electrophotographic developer, and electrophotographic developer28 Oct 2025US 12,455,516 B2Powdertech Co., Ltd.
- Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer12 Aug 2025US 12,386,281 B2Powdertech Co., Ltd.
- Organic magnetic material and semiconductor device including the same1 Apr 2025US 12,266,457 B2Gwangju Institute of Science and Technology
- Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer18 Mar 2025US 12,253,825 B2Powdertech Co., Ltd.
- Magnetoresistance effect element28 Jan 2025US 12,211,524 B2TDK Corporation
- Ga-based van der waals room-temperature ferromagnetic crystal material, preparation and use thereof8 Aug 2024US 2024/0262687 A1Huazhong University of Science and Technology
- Magnetoresistance effect element30 Nov 2023US 2023/0386511 A1TDK Corporation
- Ferrite particle, carrier core material for electrophotographic developer, carrier for electrophotographic developer, and electrophotographic developer21 Sep 2023US 2023/0296999 A1Powdertech Co., Ltd.
- Method of designing magnetism in compositionally complex oxides14 Sep 2023US 2023/0290553 A1
- Diamond substrate and method for manufacturing the same10 Aug 2023US 2023/0250553 A1National University Corporation Kanazawa University
Most cited
By later US patents
- Electronic device using magnetic components385US 5,695,864 AInternational Business Machines Corporation · 1997
- Combinatorial synthesis of novel materials365US 5,985,356 ASymyx Technologies, Inc. · 1999
- Systems and methods for the combinatorial synthesis of novel materials320US 6,045,671 ASymyx Technologies, Inc. · 2000
- Giant magnetoresistive cobalt oxide compounds218US 5,776,359 ASymyx Technologies, Inc. · 1998
- Combinatorial synthesis of novel materials210US 6,004,617 ASymyx Technologies, Inc. · 1999