G11B 7/1356
Double or multiple prisms, i.e. having two or more prisms in cooperation
G11B7/1356 (Double or multiple prisms, i.e. having two or more prisms in cooperation) appears on 638 US grants and 368 published applications in this corpus.
Search patents in G11B- Granted patents
- 638
- Published applications
- 368
- Assignees
- 132
- Inventors
- 935
- Latest grant
- 14 Jun 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 17 | 0 |
| 1993 | 17 | 0 |
| 1994 | 14 | 0 |
| 1995 | 17 | 0 |
| 1996 | 31 | 0 |
| 1997 | 42 | 0 |
| 1998 | 42 | 0 |
| 1999 | 33 | 0 |
| 2000 | 30 | 0 |
| 2001 | 34 | 23 |
| 2002 | 36 | 59 |
| 2003 | 34 | 47 |
| 2004 | 29 | 33 |
| 2005 | 31 | 42 |
| 2006 | 47 | 43 |
| 2007 | 30 | 24 |
| 2008 | 26 | 33 |
| 2009 | 13 | 22 |
| 2010 | 24 | 17 |
| 2011 | 25 | 4 |
| 2012 | 15 | 9 |
| 2013 | 2 | 4 |
| 2014 | 5 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 3 |
| 2017 | 2 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lighting apparatus and projection-type image display apparatus14 Jun 2022US 11,359,793 B2Panasonic Intellectual Property Management Co., Ltd.
- Lighting apparatus and projection-type image display apparatus9 Nov 2021US 11,168,867 B2Panasonic Intellectual Property Management Co., Ltd.
- Holographic light-emitting module and holographic storage system using the same2 May 2017US 9,640,215 B2National Central University
- Holographic data storage system11 Apr 2017US 9,620,164 B2LG Electronics Inc.
- Hologram recording and reproducing device, and angular multiplexing recording and reproducing method29 Nov 2016US 9,508,377 B2Hitachi Consumer Electronics Co., Ltd.
- Compact Writing and Reading Head for Hyper Speed Data Recording on Ceramic Material28 May 2026US 2026/0148751 A1Ceramic Data Solutions GmbH
- Lighting apparatus and projection-type image display apparatus27 Jan 2022US 2022/0026045 A1Panasonic Intellectual Property Management Co., Ltd.
- Lighting apparatus and projection-type image display apparatus30 Apr 2020US 2020/0132275 A1Panasonic Intellectual Property Management Co., Ltd.
- Holographic light-emitting module and holographic storage system using the same24 Nov 2016US 2016/0343397 A1National Central University
- Holographic data storage system7 Jul 2016US 2016/0196849 A1LG Electronics Inc.
Most cited
By later US patents
- Method and apparatus for storage and retrieval with multilayer optical disks276US 5,526,338 AYeda Research and Development Co. Ltd. · 1996
- Optical pickup with conversion of diffusion angle of outgoing light relative to diffusion angle of incident light120US 5,790,502 AMatsushita Electric Industrial Co., Ltd. · 1998
- Apparatus and method for fabricating a deflection mirror tower107US 5,790,327 AQuantum Corporation · 1998
- Method and apparatus for moving carriage assembly from initial position to target position and optical disc system including same92US 6,741,529 B1Discovision Associates · 2004
- Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal84US 5,729,511 ADiscovision Associates · 1998