G02B 27/4238
In optical recording or readout devices
Official title: {in optical recording or readout devices (optical pick-up devices such as for CD, DVD or BD reader or recorder using diffraction optics G11B7/1353)}
G02B27/4238 (In optical recording or readout devices) appears on 125 US grants and 107 published applications in this corpus.
Search patents in G02B- Granted patents
- 125
- Published applications
- 107
- Assignees
- 69
- Inventors
- 180
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 2 |
| 2002 | 6 | 6 |
| 2003 | 3 | 9 |
| 2004 | 8 | 10 |
| 2005 | 6 | 10 |
| 2006 | 8 | 11 |
| 2007 | 7 | 10 |
| 2008 | 5 | 7 |
| 2009 | 3 | 5 |
| 2010 | 16 | 10 |
| 2011 | 6 | 3 |
| 2012 | 8 | 4 |
| 2013 | 3 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 1 |
| 2020 | 5 | 4 |
| 2021 | 2 | 3 |
| 2022 | 1 | 0 |
| 2023 | 0 | 3 |
| 2024 | 0 | 1 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Arrays of integrated analytical devices14 Jan 2025US 12,196,677 B2Pacific Biosciences of California, Inc.
- Arrays of integrated analytical devices11 Oct 2022US 11,467,089 B2Pacific Biosciences of California, Inc.
- Low-height projector assembly28 Sep 2021US 11,131,858 B2OmniVision Technologies, Inc.
- Four-dimensional multi-plane broadband imaging system based on non-reentry quadratically distorted (NRQD) grating and grism6 Jul 2021US 11,054,627 B2
- Arrays of integrated analytical devices8 Dec 2020US 10,859,497 B2Pacific Biosciences of California, Inc.
- Arrays of integrated analytical devices18 Sep 2025US 2025/0290854 A1Pacific Biosciences of California, Inc.
- Head-Mounted Display with Volume Substrate-Guided Holographic Continuous Lens Optics19 Jun 2025US 2025/0199317 A1Luminit LLC
- Diffractive optical network for seeing through diffusive or scattering media29 Aug 2024US 2024/0288701 A1The Regents of the University of California
- Arrays of integrated analytical devices5 Oct 2023US 2023/0314325 A1Pacific Biosciences of California, Inc.
- Method and device for monitoring the shape of hard-to-reach components24 Aug 2023US 2023/0267631 A1Turboscan, LLC.
Most cited
By later US patents
- Apparatus and method for accessing data on multilayered optical media317US 5,784,352 AMassachusetts Institute of Technology · 1998
- Apparatus and methods for reading multilayer storage media using short coherence length sources309US 5,748,598 AMassachusetts Institute of Technology · 1998
- Compound objective lens having two focal points144US 5,446,565 AMatsushita Electric Industrial Co., Ltd. · 1995
- Hybrid refractive/diffractive achromatic lens for optical data storage systems109US 5,349,471 AUniversity of Rochester · 1994
- Color diffractive subtractive filter master recording comprising a plurality of superposed two-level relief patterns on the surface of a substrate83US 4,155,627 ARCA Corporation · 1979