H01F 1/112
With a skin
Official title: {with a skin (H01F1/113 takes precedence)}
H01F1/112 (With a skin) appears on 54 US grants and 37 published applications in this corpus.
Search patents in H01F- Granted patents
- 54
- Published applications
- 37
- Assignees
- 52
- Inventors
- 137
- Latest grant
- 24 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 4 |
| 2004 | 2 | 3 |
| 2005 | 2 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 3 |
| 2010 | 1 | 4 |
| 2011 | 1 | 4 |
| 2012 | 1 | 2 |
| 2013 | 0 | 1 |
| 2014 | 3 | 3 |
| 2015 | 0 | 1 |
| 2016 | 2 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 2 |
| 2019 | 1 | 2 |
| 2020 | 1 | 0 |
| 2021 | 2 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Core-shell particle and manufacturing method and fired product of the same, epsilon type iron oxide compound particle and manufacturing method of the same, and magnetic recording medium and manufacturing method of the same24 Jan 2023US 11,562,839 B2FUJIFILM Corporation
- Method of producing a magnetic powder and method of producing a magnetic recording medium6 Dec 2022US 11,521,649 B2Sony Corporation
- Magnetic powder, method of producing the same, and magnetic recording medium9 Nov 2021US 11,170,813 B2Sony Corporation
- Magnetic particles with a closed ultrathin silica layer, method for the production thereof and their use29 Jun 2021US 11,046,950 B2Siemens Healthcare Diagnostics Inc.
- Ferrite particles having outer shell structure used for filtering medium31 Mar 2020US 10,603,614 B2Powdertech Co., Ltd.
- A magnetic device comprising magnetic particles10 Sep 2026US 2026/0269112 A1Bionaut Labs Ltd.
- Method of producing a magnetic powder and method of producing a magnetic recording medium16 Sep 2021US 2021/0287714 A1Sony Corporation
- Magnetic particles with a closed ultrathin silica layer, method for the production thereof and their use8 Aug 2019US 2019/0241885 A1Siemens Healthcare Diagnostics Inc.
- Magnetic powder, method of producing the same, and magnetic recording medium25 Jul 2019US 2019/0228800 A1Sony Corporation
- Core-shell particle and manufacturing method and fired product of the same, epsilon type iron oxide compound particle and manufacturing method of the same, and magnetic recording medium and manufacturing method of the same13 Dec 2018US 2018/0358155 A1FUJIFILM Corporation
Most cited
By later US patents
- Production of monodisperse, polymeric microspheres86US 4,929,400 ACalifornia Institute of Technology · 1990
- Process for preparing magnetically responsive microparticles83US 5,648,124 ASeradyn, Inc. · 1997
- Semipermeable microcapsules containing a silica gel77US 3,954,678 AE. I. Du Pont de Nemours and Company · 1976
- Particles having a magnetic core and outer glass layer for separating biological material54US 6,255,477 B1Roche Diagnostics GmbH · 2001
- In situ use of gelatin or an aminodextran in the preparation of uniform ferrite particles43US 5,240,640 ACoulter Corporation · 1993