G11B 20/1211
With different data track configurations
Official title: {with different data track configurations (longitudinal control tracks with transverse user data tracks G11B20/1207)}
G11B20/1211 (With different data track configurations) appears on 69 US grants and 23 published applications in this corpus.
Search patents in G11B- Granted patents
- 69
- Published applications
- 23
- Assignees
- 22
- Inventors
- 109
- Latest grant
- 11 Feb 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 2 |
| 2004 | 1 | 0 |
| 2005 | 3 | 1 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 2 | 3 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 5 | 0 |
| 2013 | 3 | 2 |
| 2014 | 1 | 3 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Diagnostic tape cartridge patterned with predetermined head-media spacings for testing a tape head of a tape drive11 Feb 2020US 10,559,322 B2Quantum Corporation
- Calibration of high-density servo pattern detector parameters12 Feb 2019US 10,204,649 B2International Business Machines Corporation
- Calibration of high-density servo pattern detector parameters17 Jul 2018US 10,026,428 B1International Business Machines Corporation
- Timing-based servo for determining lateral head velocity25 Nov 2014US 8,896,960 B2International Business Machines Corporation
- Timing-based servo for determining lateral head velocity31 Dec 2013US 8,619,384 B1International Business Machines Corporation
- Diagnostic tape cartridge patterned with predetermined head-media spacings for testing a tape head of a tape drive18 Jul 2019US 2019/0221234 A1Quantum Corporation
- Calibration of high-density servo pattern detector parameters20 Sep 2018US 2018/0268851 A1International Business Machines Corporation
- Method of making a multi-channel time based servo tape media27 Mar 2014US 2014/0085751 A1Advanced Research Corporation
- Timing-based servo for determining lateral head velocity6 Feb 2014US 2014/0036386 A1International Business Machines Corporation
- Timing-based servo for determining lateral head velocity23 Jan 2014US 2014/0022667 A1International Business Machines Corporation
Most cited
By later US patents
- Low inductance, ferrite sub-gap substrate structure for surface film magnetic recording heads139US 6,496,328 B1Advanced Research Corporation · 2002
- Method and apparatus for recording data on magnetic tape media47US 5,325,370 AStorage Technology Corporation · 1994
- Digital signal recording apparatus with a digital subdata converting capability38US 4,893,199 ASony Corporation · 1990
- Data storage apparatus and method36US 5,081,548 AHewlett-Packard Company · 1992
- Method and apparatus for managing data on rewritable media to define read/write operational status31US 5,369,532 AStorage Technology Corporation · 1994