G11B 23/044
Reels or cores
Official title: {Reels or cores; positioning of the reels in the cassette}
G11B23/044 (Reels or cores) appears on 123 US grants and 126 published applications in this corpus.
Search patents in G11B- Granted patents
- 123
- Published applications
- 126
- Assignees
- 29
- Inventors
- 164
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 3 |
| 2002 | 5 | 8 |
| 2003 | 4 | 6 |
| 2004 | 4 | 10 |
| 2005 | 9 | 15 |
| 2006 | 8 | 8 |
| 2007 | 13 | 15 |
| 2008 | 7 | 13 |
| 2009 | 8 | 7 |
| 2010 | 4 | 1 |
| 2011 | 6 | 6 |
| 2012 | 2 | 2 |
| 2013 | 3 | 7 |
| 2014 | 4 | 5 |
| 2015 | 3 | 0 |
| 2016 | 2 | 2 |
| 2017 | 0 | 2 |
| 2018 | 2 | 1 |
| 2019 | 2 | 0 |
| 2020 | 1 | 3 |
| 2021 | 1 | 2 |
| 2022 | 3 | 1 |
| 2023 | 4 | 5 |
| 2024 | 3 | 1 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Providing a stiffener in a tape reel hub to reduce tape dimensional stability errors19 May 2026US 12,633,311 B2International Business Machines Corporation
- Tape reel with reel hub having expanding outer peripheral regions, tape cartridge, and apparatus for producing tape reel3 Jun 2025US 12,322,415 B2Sony Group Corporation
- Tape reel and tape cartridge10 Sep 2024US 12,087,327 B2FUJIFILM Corporation
- Tape reel and tape cartridge20 Aug 2024US 12,068,005 B2Sony Group Corporation
- Hub, information processing apparatus, and program5 Mar 2024US 11,922,971 B2FUJIFILM Corporation
- Tape drive, tape, and storage system19 Mar 2026US 2026/0080902 A1Huawei Technologies Co., Ltd.
- Tape path with movable tape support2 Oct 2025US 2025/0308557 A1International Business Machines Corporation
- Providing a stiffener in a tape reel hub to reduce tape dimensional stability errors2 Oct 2025US 2025/0308558 A1International Business Machines Corporation
- Tape reel, tape cartridge, and apparatus for producing tape reel16 May 2024US 2024/0161781 A1Sony Group Corporation
- Tape reel and tape cartridge5 Oct 2023US 2023/0317113 A1FUJIFILM Corporation
Most cited
By later US patents
- Magnetic tape cartridge80US 7,287,715 B2Hitachi Maxell, Ltd. · 2007
- Tape cartridge bearing34US 5,027,249 A1991
- Reel of magnetic tape cartridge33US 6,568,619 B1Fuji Photo Film Co., Ltd. · 2003
- Tape drive system with engagement control feature21US 6,273,352 B1Imation Corp. · 2001
- Tape reel assembly with washer guard for a data storage tape cartridge19US 6,315,230 B1Imation Corp. · 2001