G11B 7/22
Apparatus or processes for the manufacture of optical heads
Official title: Apparatus or processes for the manufacture of optical heads, e.g. assembly
G11B7/22 (Apparatus or processes for the manufacture of optical heads) appears on 817 US grants and 688 published applications in this corpus.
Search patents in G11B- Granted patents
- 817
- Published applications
- 688
- Assignees
- 204
- Inventors
- 1,529
- Latest grant
- 12 Oct 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 12 | 0 |
| 1995 | 10 | 0 |
| 1996 | 29 | 0 |
| 1997 | 18 | 0 |
| 1998 | 35 | 0 |
| 1999 | 31 | 0 |
| 2000 | 53 | 0 |
| 2001 | 47 | 33 |
| 2002 | 48 | 60 |
| 2003 | 46 | 77 |
| 2004 | 62 | 81 |
| 2005 | 58 | 81 |
| 2006 | 50 | 69 |
| 2007 | 40 | 48 |
| 2008 | 36 | 51 |
| 2009 | 36 | 35 |
| 2010 | 37 | 38 |
| 2011 | 30 | 35 |
| 2012 | 31 | 27 |
| 2013 | 34 | 27 |
| 2014 | 24 | 10 |
| 2015 | 6 | 5 |
| 2016 | 7 | 5 |
| 2017 | 0 | 2 |
| 2018 | 4 | 3 |
| 2019 | 2 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical unit12 Oct 2021US 11,141,817 B2Olympus Corporation
- Low stress mounting configuration for optical component19 Nov 2019US 10,481,361 B2Qioptiq Limited
- Optical pickup7 May 2019US 10,283,157 B2Panasonic Intellectual Property Management Co., Ltd.
- Thermally-assisted magnetic recording head having symmetric optical side shields4 Sep 2018US 10,068,596 B2Headway Technologies, Inc.
- Low stress mounting configuration for optical component28 Aug 2018US 10,061,098 B2Qioptiq Limited
- Optical unit29 Aug 2019US 2019/0262943 A1Olympus Corporation
- Low stress mounting configuration for optical component29 Nov 2018US 2018/0341081 A1Qioptiq Limited
- Optical pickup20 Sep 2018US 2018/0268856 A1Panasonic Intellectual Property Management Co., Ltd.
- Thermally-assisted magnetic recording head having symmetric optical side shields5 Apr 2018US 2018/0096702 A1Headway Technologies, Inc.
- Fixed position controller and method26 Oct 2017US 2017/0307532 A1Hitachi High-Technologies Corporation
Most cited
By later US patents
- High numerical aperture optical focusing device having a conical incident facet and a parabolic reflector for use in data storage systems185US 6,377,535 B1Read-Rite Corporation · 2002
- Magneto-optical data storage system having an optical-processing flying head180US 6,081,499 ASeagate Technology LLC · 2000
- Near field magneto-optical head made using wafer processing techniques167US 6,130,779 ARead-Rite Corporation · 2000
- Structure for micro-machine optical tooling and method for making and using166US 6,049,650 ASeagate Technology LLC · 2000
- High numerical aperture optical focusing device for use in data storage systems165US 6,229,782 B1Read-Rite Corporation · 2001