G11B 23/04
Magazines
Official title: Magazines; Cassettes {for webs or filaments}(G11B23/12 takes precedence {; cassettes with sealing or locking means G11B23/28; dummy cassettes for locking in the drive G11B33/005})
G11B23/04 (Magazines) appears on 2,893 US grants and 1,048 published applications in this corpus.
Search patents in G11B- Granted patents
- 2,893
- Published applications
- 1,048
- Assignees
- 368
- Inventors
- 2,449
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 42 | 0 |
| 1977 | 40 | 0 |
| 1978 | 40 | 0 |
| 1979 | 23 | 0 |
| 1980 | 40 | 0 |
| 1981 | 42 | 0 |
| 1982 | 44 | 0 |
| 1983 | 59 | 0 |
| 1984 | 75 | 0 |
| 1985 | 78 | 0 |
| 1986 | 82 | 0 |
| 1987 | 105 | 0 |
| 1988 | 102 | 0 |
| 1989 | 95 | 0 |
| 1990 | 82 | 0 |
| 1991 | 86 | 0 |
| 1992 | 67 | 0 |
| 1993 | 98 | 0 |
| 1994 | 107 | 0 |
| 1995 | 96 | 0 |
| 1996 | 87 | 0 |
| 1997 | 79 | 0 |
| 1998 | 90 | 0 |
| 1999 | 79 | 0 |
| 2000 | 91 | 0 |
| 2001 | 78 | 31 |
| 2002 | 83 | 104 |
| 2003 | 105 | 151 |
| 2004 | 103 | 136 |
| 2005 | 103 | 116 |
| 2006 | 97 | 82 |
| 2007 | 83 | 59 |
| 2008 | 81 | 55 |
| 2009 | 48 | 41 |
| 2010 | 35 | 26 |
| 2011 | 26 | 17 |
| 2012 | 15 | 9 |
| 2013 | 9 | 21 |
| 2014 | 15 | 12 |
| 2015 | 10 | 6 |
| 2016 | 9 | 8 |
| 2017 | 8 | 9 |
| 2018 | 7 | 5 |
| 2019 | 10 | 7 |
| 2020 | 12 | 15 |
| 2021 | 21 | 35 |
| 2022 | 26 | 21 |
| 2023 | 25 | 34 |
| 2024 | 21 | 29 |
| 2025 | 22 | 10 |
| 2026 | 12 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Servo pattern recording head, servo pattern recording device, magnetic tape, magnetic tape cartridge, magnetic tape drive, magnetic tape system, and manufacturing method of magnetic tape9 Jun 2026US 12,651,609 B2FUJIFILM Corporation
- Magnetic tape drive, magnetic tape cartridge, and information management method26 May 2026US 12,640,167 B2FUJIFILM Corporation
- Providing a stiffener in a tape reel hub to reduce tape dimensional stability errors19 May 2026US 12,633,311 B2International Business Machines Corporation
- Magnetic tape, magnetic tape cartridge, servo pattern recording device, magnetic tape drive, magnetic tape system, detection device, inspection device, servo pattern recording method, manufacturing method of magnetic tape, detection method, and inspection method12 May 2026US 12,626,721 B2FUJIFILM Corporation
- Magnetic recording medium including fatty ester and fatty acid ester7 Apr 2026US 12,597,441 B2Sony Group Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus27 Aug 2026US 2026/0253611 A1FUJIFILM Corporation
- Magnetic recording medium6 Aug 2026US 2026/0229252 A1Sony Group Corporation
- Magnetic recording medium30 Jul 2026US 2026/0221154 A1Sony Group Corporation
- Magnetic recording medium11 Jun 2026US 2026/0162677 A1Sony Group Corporation
- Magnetic tape and tape cartridge16 Apr 2026US 2026/0105930 A1Sony Group Corporation
Most cited
By later US patents
- TV recording and viewing control system876US 5,253,066 A1993
- Apparatus and method for tracking the playing of VCR programs447US 5,488,409 A1996
- Smart data storage device198US 5,159,182 ASmartDiskette GmbH · 1992
- Method for selectively playing back programs recorded on a video tape191US 5,621,579 AIndex Systems, Inc. · 1997
- Combination of VCR index and EPG181US 6,147,715 AIndex Systems, Inc. · 2000