G02B 6/0038
Linear indentations or grooves
Official title: {Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide}
G02B6/0038 (Linear indentations or grooves) appears on 2,429 US grants and 2,859 published applications in this corpus.
Search patents in G02B- Granted patents
- 2,429
- Published applications
- 2,859
- Assignees
- 724
- Inventors
- 4,267
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 10 | 0 |
| 1996 | 11 | 0 |
| 1997 | 16 | 0 |
| 1998 | 25 | 0 |
| 1999 | 32 | 0 |
| 2000 | 42 | 0 |
| 2001 | 37 | 47 |
| 2002 | 58 | 75 |
| 2003 | 72 | 99 |
| 2004 | 80 | 114 |
| 2005 | 56 | 126 |
| 2006 | 90 | 149 |
| 2007 | 89 | 116 |
| 2008 | 80 | 147 |
| 2009 | 81 | 160 |
| 2010 | 107 | 130 |
| 2011 | 75 | 105 |
| 2012 | 93 | 132 |
| 2013 | 105 | 122 |
| 2014 | 92 | 131 |
| 2015 | 94 | 110 |
| 2016 | 90 | 116 |
| 2017 | 95 | 125 |
| 2018 | 97 | 123 |
| 2019 | 130 | 123 |
| 2020 | 126 | 130 |
| 2021 | 122 | 136 |
| 2022 | 117 | 89 |
| 2023 | 101 | 108 |
| 2024 | 79 | 67 |
| 2025 | 63 | 54 |
| 2026 | 31 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Light emitting device and switch device22 Sep 2026US 12,744,168 B2Valeo Japan Co., Ltd.
- Vehicle lamp8 Sep 2026US 12,729,824 B2Nichia Corporation
- Film-based lightguide with interior light directing edges and lateral reflections25 Aug 2026US 12,717,076 B2Azumo, Inc.
- Thin and flexible edge-lit waveguide illumination systems with complex surface topologies and light converting properties18 Aug 2026US 12,710,581 B2S.V.V. Technology Innovations, Inc.
- Head-up display system28 Jul 2026US 12,693,531 B2Panasonic Intellectual Property Management Co., Ltd.
- Light guide plate and display assembly1 Oct 2026US 2026/0299184 A1Nicrotek Co., Ltd.
- Method to improve display efficiency and uniformity of ar waveguide1 Oct 2026US 2026/0299304 A1APPLIED Materials.Inc.
- Vehicle lamp17 Sep 2026US 2026/0276169 A1Nichia Corporation
- Laminate, optical member, optical apparatus, and method for producing laminate10 Sep 2026US 2026/0267053 A1Nitto Denko Corporation
- Display device and method of manufacturing the same3 Sep 2026US 2026/0259449 A1Beijing Boe Display Technology Co., Ltd.
Most cited
By later US patents
- Protective cover for a lighting device1,137US 6,185,356 B2Lumitex, Inc. · 2001
- Compact head-up display521US 4,711,512 AEnvironmental Research Institute of Michigan · 1987
- High-density illumination system467US 6,871,982 B2Digital Optics International Corporation · 2005
- Thin panel illuminator460US 5,005,108 ALumitex, Inc. · 1991
- Divergent angle rotator system and method for collimating light beams317US 5,854,872 AClio Technologies, Inc. · 1998