G11B 7/121
Protecting the head
Official title: Protecting the head, e.g. against dust or impact with the record carrier
G11B7/121 (Protecting the head) appears on 209 US grants and 205 published applications in this corpus.
Search patents in G11B- Granted patents
- 209
- Published applications
- 205
- Assignees
- 90
- Inventors
- 467
- Latest grant
- 7 Nov 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 3 |
| 2002 | 7 | 14 |
| 2003 | 7 | 14 |
| 2004 | 9 | 23 |
| 2005 | 10 | 17 |
| 2006 | 11 | 19 |
| 2007 | 10 | 19 |
| 2008 | 10 | 32 |
| 2009 | 14 | 22 |
| 2010 | 15 | 13 |
| 2011 | 21 | 4 |
| 2012 | 9 | 8 |
| 2013 | 8 | 3 |
| 2014 | 11 | 10 |
| 2015 | 6 | 2 |
| 2016 | 5 | 2 |
| 2017 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Resistive temperature sensors for improved asperity, head-media spacing, and/or head-media contact detection7 Nov 2017US 9,812,161 B2Seagate Technology LLC
- Resistive temperature sensors for improved asperity, head-media spacing, and/or head-media contact detection20 Sep 2016US 9,449,629 B2Seagate Technology LLC
- Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection12 Jul 2016US 9,390,741 B2Saegate Technology LLC
- Asperity and head-media contact detection using multi-stage temperature coefficient of resistance sensor21 Jun 2016US 9,373,361 B2Seagate Technology LLC
- Optical disc apparatus, sheet member, and method for cleaning objective lens2 Feb 2016US 9,251,836 B2Panasonic Intellectual Property Management Co., Ltd.
- Resistive temperature sensors for improved asperity, head-media spacing, and/or head-media contact detection22 Dec 2016US 2016/0372144 A1Seagate Technology LLC
- Resistive temperature sensors for improved asperity, head-media spacing, and/or head-media contact detection21 Jan 2016US 2016/0019923 A1Seagate Technology LLC
- Asperity and head-media contact detection using multi-stage temperature coefficient of resistance sensor31 Dec 2015US 2015/0380021 A1Seagate Technology LLC
- Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection10 Sep 2015US 2015/0255102 A1Seagate Technology LLC
- Optical disc apparatus, sheet member, and method for cleaning objective lens25 Dec 2014US 2014/0380342 A1Panasonic Corporation
Most cited
By later US patents
- Near-field optical probe, near-field optical microscope and optical recording/reproducing device with near-field optical probe96US 6,768,556 B1Hitachi, Ltd. · 2004
- Cleaning apparatus for heads of data storage disks50US 5,467,238 AQuantum Corporation · 1995
- Optical storage system with head cleaning mechanism based on a position-controllable optical interfacing surface in an optical head25US 6,307,832 B1Terastor Corporation · 2001
- Optical information processing apparatus and cleaning cartridge24US 4,870,636 AKabushiki Kaisha Toshiba · 1989
- Dual purpose cleaning card23US 5,525,417 AClean Team Company · 1996