G11B 23/26
Of leaders for loading or threading
Official title: of leaders for loading or threading, e.g. to form a temporary connection
G11B23/26 (Of leaders for loading or threading) appears on 189 US grants and 102 published applications in this corpus.
Search patents in G11B- Granted patents
- 189
- Published applications
- 102
- Assignees
- 49
- Inventors
- 238
- Latest grant
- 23 Mar 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 11 | 0 |
| 2001 | 11 | 11 |
| 2002 | 13 | 12 |
| 2003 | 16 | 18 |
| 2004 | 12 | 24 |
| 2005 | 24 | 20 |
| 2006 | 13 | 3 |
| 2007 | 4 | 6 |
| 2008 | 10 | 5 |
| 2009 | 2 | 0 |
| 2010 | 1 | 1 |
| 2011 | 3 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Data storage tape cartridge23 Mar 2021US 10,957,356 B2International Business Machines Corporation
- Leader retention method and device6 Mar 2012US 8,130,465 B1Oracle America, Inc.
- Single-reel type tape cartridge28 Jun 2011US 7,967,931 B2Hitachi Maxell, Ltd.
- Recording medium changer and reproducing apparatus1 Feb 2011US 7,881,163 B2Sony Corporation
- Method and apparatus for utilizing a tape leader in a tape drive system4 Jan 2011US 7,861,961 B2Oracle America, Inc.
- Magnetic recording medium and magnetic recording medium cartridge5 Dec 2024US 2024/0404555 A1Sony Group Corporation
- Data storage tape cartridge28 May 2020US 2020/0168249 A1International Business Machines Corporation
- Single-reel type tape cartridge4 Mar 2010US 2010/0050413 A1Hitachi Maxell, Ltd.
- Apparatus and Method for Reversing Tapewind Direction13 Nov 2008US 2008/0277518 A1Hewlett-Packard Development Company, L. P.
- Recording medium changer and reproducing apparatus19 Jun 2008US 2008/0148302 A1Sony Corporation
Most cited
By later US patents
- Leader block for single reel tape cartridge54US 4,452,406 AInternational Business Machines Corporation · 1984
- Single reel tape cartridge47US 4,426,047 AInternational Business Machines Corporation · 1984
- Means for pulling tape from a reel42US 4,572,460 ADigital Equipment Corporation · 1986
- Single reel tape cartridge with leader block door seal40US 4,383,660 AInternational Business Machines Corporation · 1983
- Magnetic tape cartridge having leader block retainer mechanism37US 5,465,187 AStorage Technology Corporation · 1995