G11B 23/42
Marks for indexing, speed-controlling, synchronising, or timing
G11B23/42 (Marks for indexing, speed-controlling, synchronising, or timing) appears on 36 US grants and 20 published applications in this corpus.
Search patents in G11B- Granted patents
- 36
- Published applications
- 20
- Assignees
- 22
- Inventors
- 65
- Latest grant
- 17 Apr 2012
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 3 |
| 2003 | 0 | 3 |
| 2004 | 0 | 4 |
| 2005 | 0 | 3 |
| 2006 | 2 | 0 |
| 2007 | 2 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- High density optical disc and method for reproducing and recording data thereof17 Apr 2012US 8,159,922 B2LG Electronics Inc.
- Optical disk apparatus and emission control method7 Feb 2012US 8,111,598 B2Sony Corporation
- Optical disk labeling system and method2 Mar 2010US 7,671,880 B2Hewlett-Packard Development Company, L. P.
- High density optical disc and method for reproducing and recording data thereof11 Mar 2008US 7,342,871 B2LG Electronics Inc.
- Calibrating fine actuator using a reference pattern22 May 2007US 7,219,840 B2Hewlett-Packard Development Company, L. P.
- Optical beam positioning at radial location of optical disc using series of segments at edge of optical disc25 Apr 2013US 2013/0100790 A1Hewlett-Packard Development Company, L. P.
- Optical disk apparatus and emission control method14 Jan 2010US 2010/0008197 A1Sony Corporation
- Recordable medium with template pattern23 Oct 2008US 2008/0261808 A1Hewlett-Packard Development Company, L. P.
- High density optical disc and method for reproducing and recording data thereof22 Nov 2007US 2007/0268798 A1LG Electronics Inc.
- High density optical disc and method for reproducing and recording data thereof22 Nov 2007US 2007/0268801 A1
Most cited
By later US patents
- Disc serialization62US 5,572,589 AMicrosoft Corporation · 1996
- Tape system with optically contrasting data marks43US 4,380,032 ANewell Research Corporation · 1983
- Rewritable recording medium and recording reproducing apparatus for use with rewritable recording medium37US 5,270,998 APioneer Electronic Corporation · 1993
- Data storage disk having improved tracking capability32US 5,537,282 A1996
- Information storage disk transducer position control system using a prerecorded servo pattern requiring no alignment with the storage disk30US 4,558,383 AInternational Business Machines Corporation · 1985