G11B 7/0031
Using a rotating head
Official title: {using a rotating head, e.g. helicoidal recording}
G11B7/0031 (Using a rotating head) appears on 54 US grants and 10 published applications in this corpus.
Search patents in G11B- Granted patents
- 54
- Published applications
- 10
- Assignees
- 24
- Inventors
- 111
- Latest grant
- 13 Mar 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 5 | 7 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical tape with an increased track pitch for improvement of tracking performance after seam13 Mar 2018US 9,916,852 B2Oracle International Corporation
- Apparatus and method for controlling tape movement in a rotary head data storage system and retrieval system26 Apr 2016US 9,324,347 B2Oracle International Corporation
- Rotary head data storage and retrieval system and method for data verification25 Nov 2014US 8,897,113 B2Oracle International Corporation
- Rotary head data storage and retrieval system and method21 Oct 2014US 8,869,179 B2Oracle International Corporation
- Rotary head multi-layer data storage and retrieval system and method21 Oct 2014US 8,869,180 B2Oracle America, Inc.
- Optical tape with an increased track pitch for improvement of tracking performance after seam21 Dec 2017US 2017/0365290 A1Oracle International Corporation
- Rotary head data storage and retrieval system and method29 May 2014US 2014/0146652 A1Oracle International Corporation
- Rotary head multi-layer data storage and retrieval system and method29 May 2014US 2014/0146654 A1Oracle International Corporation
- Rotary Head Data Storage and Retrieval System and Method for Data Erasure8 May 2014US 2014/0126343 A1Oracle International Corporation
- Rotary Head Data Storage and Retrieval System and Method for Data Verification8 May 2014US 2014/0126344 A1Oracle International Corporation
Most cited
By later US patents
- Read-write head for an optical tape recorder57US 5,216,534 AE-Systems, Inc. · 1993
- Compression and expansion circuitry for a recording and playback system43US 4,224,481 A1980
- Signal format for optical tape record/playback system41US 4,669,070 ARCA Corporation · 1987
- Optical tape apparatus with a tracking control mechanism and/or a focusing control mechanism40US 4,970,707 AHitachi, Ltd. · 1990
- Optical magnetic recording device30US 4,525,828 ATokyo Shibaura Denki Kabushiki Kaisha · 1985