G02B 5/0231
The surface having microprismatic or micropyramidal shape
Official title: {the surface having microprismatic or micropyramidal shape (macroscopic prism arrays G02B5/045)}
G02B5/0231 (The surface having microprismatic or micropyramidal shape) appears on 500 US grants and 731 published applications in this corpus.
Search patents in G02B- Granted patents
- 500
- Published applications
- 731
- Assignees
- 278
- Inventors
- 1,403
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 3 |
| 2003 | 4 | 2 |
| 2004 | 6 | 8 |
| 2005 | 2 | 15 |
| 2006 | 3 | 18 |
| 2007 | 9 | 27 |
| 2008 | 13 | 36 |
| 2009 | 10 | 43 |
| 2010 | 24 | 33 |
| 2011 | 13 | 22 |
| 2012 | 14 | 38 |
| 2013 | 25 | 25 |
| 2014 | 24 | 23 |
| 2015 | 18 | 45 |
| 2016 | 25 | 44 |
| 2017 | 24 | 49 |
| 2018 | 35 | 40 |
| 2019 | 40 | 39 |
| 2020 | 29 | 34 |
| 2021 | 32 | 43 |
| 2022 | 33 | 38 |
| 2023 | 25 | 27 |
| 2024 | 31 | 32 |
| 2025 | 21 | 22 |
| 2026 | 11 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Lighting device for vehicles and production method24 Feb 2026US 12,560,300 B2Hella GmbH & Co. KGaA
- Display device and light diffusion optical film thereof1 Oct 2026US 2026/0299176 A1Twin Beam Co., Ltd.
- Electronic device1 Oct 2026US 2026/0299185 A1Innolux Corporation
- Light diffusion sheet, backlight unit, liquid crystal display device, and information apparatus24 Sep 2026US 2026/0287798 A1Keiwa Inc.
- Light Management System with Distributed Light Input Ports and Light-Converting Layer24 Sep 2026US 2026/0293368 A1
- Light diffusion sheet, backlight unit, liquid crystal display device, information apparatus, and method for manufacturing light diffusion sheet10 Sep 2026US 2026/0267041 A1Keiwa Inc.
Most cited
By later US patents
- Light directing film having variable height structured surface and light directing article constructed therefrom296US 5,771,328 AMinnesota Mining and Manufacturing Company · 1998
- Variable pitch structured optical film202US 5,919,551 A3M Innovative Properties Company · 1999
- Optical film and liquid crystal display device using the film159US 5,600,462 AInternational Business Machines Corporation · 1997
- Nonimaging light source129US 5,001,609 AHewlett-Packard Company · 1991
- Light redirecting element comprising a forward diffracting region and a scattering region120US 8,619,363 B1Fusion Optix, Inc. · 2013