G11B 23/18
Record carriers with multiple tracks
Official title: Record carriers with multiple tracks, e.g. with complementary and partial tracks such as paired "stereo" tracks {contains no documents}
G11B23/18 (Record carriers with multiple tracks) appears on 6 US grants and 4 published applications in this corpus.
Search patents in G11B- Granted patents
- 6
- Published applications
- 4
- Assignees
- 6
- Inventors
- 15
- Latest grant
- 25 Jan 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Multi-spool tape recording apparatus having removable mounts for supporting tape spool pairs25 Jan 2022US 11,232,815 B2International Business Machines Corporation
- Multitrack servo marks with perpendicular and longitudinal magnetic fields25 Jun 2019US 10,332,557 B1Seagate Technology LLC
- Multitrack recorder29 Jul 2014US 8,792,310 B2TEAC Corporation
- Recording tape attaching method and recording tape attaching apparatus12 Jul 2011US 7,975,954 B2FUJIFILM Corporation
- Format and method for recording optimization16 Jan 1996US 5,485,321 AStorage Technology Corporation
- Multi-spool tape recording apparatus having removable mounts for supporting tape spool pairs29 Apr 2021US 2021/0125637 A1International Business Machines Corporation
- Multitrack recorder27 Feb 2014US 2014/0056119 A1TEAC Corporation
- Recording tape attaching method and recording tape attaching apparatus19 Nov 2009US 2009/0283621 A1FUJIFILM Corporation
- Disk shield for optical disks designed to protect DVDs and video game disks14 Oct 2004US 2004/0205805 A1
Most cited
By later US patents
- Format and method for recording optimization92US 5,485,321 AStorage Technology Corporation · 1996
- Multitrack servo marks with perpendicular and longitudinal magnetic fields5US 10,332,557 B1Seagate Technology LLC · 2019
- Digital data record4US 4,571,713 ANews Log International, Inc. · 1986
- Multi-spool tape recording apparatus having removable mounts for supporting tape spool pairs2US 11,232,815 B2International Business Machines Corporation · 2022
- Recording tape attaching method and recording tape attaching apparatus1US 7,975,954 B2FUJIFILM Corporation · 2011