G11B 5/70684
Ferro-ferrioxydes
Official title: {Ferro-ferrioxydes}
G11B5/70684 (Ferro-ferrioxydes) appears on 96 US grants and 19 published applications in this corpus.
Search patents in G11B- Granted patents
- 96
- Published applications
- 19
- Assignees
- 34
- Inventors
- 184
- Latest grant
- 12 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 8 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 3 |
| 2020 | 3 | 6 |
| 2021 | 4 | 5 |
| 2022 | 11 | 1 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Magnetic recording medium, magnetic tape cartridge, and magnetic recording and reproducing device12 Dec 2023US 11,842,756 B2FUJIFILM Corporation
- Magnetic recording medium8 Nov 2022US 11,495,258 B2Sony Group Corporation
- Magnetic tape with particular refractive index characteristics, magnetic tape cartridge, and magnetic tape apparatus13 Sep 2022US 11,443,766 B2FUJIFILM Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus6 Sep 2022US 11,437,063 B2FUJIFILM Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus30 Aug 2022US 11,430,476 B2FUJIFILM Corporation
- Magnetic recording medium, magnetic tape cartridge, and magnetic recording and reproducing device17 Aug 2023US 2023/0260544 A1FUJIFILM Corporation
- Magnetic recording medium30 Jun 2022US 2022/0208227 A1Sony Group Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus2 Dec 2021US 2021/0375311 A1FUJIFILM Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus23 Sep 2021US 2021/0295865 A1FUJIFILM Corporation
- Magnetic recording medium, magnetic tape cartridge, and magnetic recording and reproducing device16 Sep 2021US 2021/0287713 A1FUJIFILM Corporation
Most cited
By later US patents
- Production of iron oxide pigments with improved resistance to oxidation38US 4,082,905 ABayer Aktiengesellschaft · 1978
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus29US 10,811,048 B2FUJIFILM Corporation · 2020
- Magnetic bacteria and products derived therefrom29US 4,385,119 ABioMagnetech Corp. · 1983
- Lamellar iron oxide pigments, a process for the production thereof and the use thereof28US 4,676,838 ABayer Aktiengesellschaft · 1987
- Magnetic particles comprising magnetite core and process for producing the same24US 5,599,627 AToda Kogyo Corporation · 1997