G02B 6/0048
With stepwise taper
Official title: {with stepwise taper}
G02B6/0048 (With stepwise taper) appears on 279 US grants and 274 published applications in this corpus.
Search patents in G02B- Granted patents
- 279
- Published applications
- 274
- Assignees
- 144
- Inventors
- 462
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 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 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 8 | 0 |
| 2001 | 3 | 3 |
| 2002 | 8 | 5 |
| 2003 | 11 | 6 |
| 2004 | 3 | 9 |
| 2005 | 5 | 3 |
| 2006 | 5 | 9 |
| 2007 | 3 | 3 |
| 2008 | 6 | 13 |
| 2009 | 7 | 10 |
| 2010 | 10 | 10 |
| 2011 | 8 | 14 |
| 2012 | 10 | 8 |
| 2013 | 12 | 19 |
| 2014 | 9 | 19 |
| 2015 | 9 | 15 |
| 2016 | 15 | 17 |
| 2017 | 19 | 21 |
| 2018 | 12 | 16 |
| 2019 | 28 | 18 |
| 2020 | 13 | 13 |
| 2021 | 21 | 10 |
| 2022 | 7 | 8 |
| 2023 | 6 | 12 |
| 2024 | 12 | 6 |
| 2025 | 4 | 5 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Illumination device and display device11 Aug 2026US 12,704,722 B2Magnolia White Corporation
- Backlight module2 Jun 2026US 12,645,022 B2AmTRAN Technology Co., Ltd.
- Lighting fixture with waveguide12 May 2026US 12,625,315 B2Cree Lighting USA LLC
- Illumination device and display device7 Apr 2026US 12,596,222 B2Magnolia White Corporation
- System and method for portable, safety lighting17 Feb 2026US 12,554,058 B2Archangel Device LLC
- System and method for portable, safety lighting4 Jun 2026US 2026/0153664 A1Archangel Device LLC
- Optical stack for imaging directional backlights15 Jan 2026US 2026/0016626 A1RealD Spark, LLC
- Wide angle imaging directional backlights30 Oct 2025US 2025/0334732 A1RealD Spark, LLC
- Encoder, decoder, encoding method, and decoding method23 Oct 2025US 2025/0330658 A1Panasonic Intellectual Property Corporation of America
- Illumination device and display device29 May 2025US 2025/0172739 A1Japan Display Inc.
Most cited
By later US patents
- Faceted light pipe322US 5,050,946 ACompaq Computer Corporation · 1991
- Backlighting system with faceted light pipes307US 5,202,950 ACompaq Computer Corporation · 1993
- Front-lit liquid crystal display having brightness enhancing film with microridges which directs light through the display to a reflector276US 5,608,550 AMinnesota Mining and Manufacturing Company · 1997
- Light emitting diode lamp269US 4,929,866 AMitsubishi Cable Industries, Ltd. · 1990
- Lighting device212US 4,914,553 ASharp Kabushiki Kaisha · 1990