G11B 23/0308
Shutters
Official title: {Shutters (G11B23/0317 takes precedence)}
G11B23/0308 (Shutters) appears on 540 US grants and 313 published applications in this corpus.
Search patents in G11B- Granted patents
- 540
- Published applications
- 313
- Assignees
- 103
- Inventors
- 616
- Latest grant
- 11 May 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 14 | 0 |
| 1990 | 10 | 0 |
| 1991 | 19 | 0 |
| 1992 | 17 | 0 |
| 1993 | 17 | 0 |
| 1994 | 16 | 0 |
| 1995 | 16 | 0 |
| 1996 | 16 | 0 |
| 1997 | 18 | 0 |
| 1998 | 19 | 0 |
| 1999 | 30 | 0 |
| 2000 | 29 | 0 |
| 2001 | 35 | 23 |
| 2002 | 27 | 40 |
| 2003 | 25 | 43 |
| 2004 | 37 | 46 |
| 2005 | 30 | 56 |
| 2006 | 36 | 56 |
| 2007 | 27 | 20 |
| 2008 | 22 | 13 |
| 2009 | 23 | 7 |
| 2010 | 15 | 3 |
| 2011 | 4 | 1 |
| 2012 | 6 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 2 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Cassette shutter11 May 2021US 11,004,469 B2Hyosung Tns Inc.
- Opening/closing mechanism for rotary cover16 Jul 2019US 10,354,698 B2Panasonic Intellectual Property Management Co., Ltd.
- Media playback apparatus and shutter mechanism4 Jun 2019US 10,311,910 B2Mitsubishi Electric Corporation
- Disc cartridge and disc device14 Jun 2016US 9,368,153 B2Panasonic Intellectual Property Mangement Co., Ltd.
- Disk cartridge including an inner rotor and a shutter29 Jan 2013US 8,365,211 B2Sony Corporation
- Cassette shutter15 Aug 2019US 2019/0251998 A1Hyosung Tns Inc.
- Media playback apparatus and shutter mechanism23 Aug 2018US 2018/0240497 A1Mitsubishi Electric Corporation
- Opening/closing mechanism for rotary cover and disk drive device23 Aug 2018US 2018/0240503 A1Panasonic Intellectual Property Management Co., Ltd.
- Disc cartridge and disc device4 Jun 2015US 2015/0155005 A1Panasonic Intellectual Property Management Co., Ltd.
- Cassette and changer apparatus for optical disk6 Mar 2014US 2014/0068641 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Disc player and disc loading device185US 5,355,357 ASony Corporation · 1994
- Optical storage systems with flying optical heads for near-field recording and reading103US 6,243,350 B1Terastor Corporation · 2001
- Recording and reproducing apparatus101US 5,473,584 AMatsushita Electric Industrial Co., Ltd. · 1995
- Data storage device with removable cartridge having shutter unlocking and disk unrestraining arrangements65US 5,481,420 A1996
- Removable disk cartridge for use with a rotary actuated disk drive58US 5,381,402 ADigital Equipment Corporation · 1995