G02B 5/20
Filters
Official title: Filters (polarising elements G02B5/30)
G02B5/20 (Filters) appears on 12,237 US grants and 14,851 published applications in this corpus.
Search patents in G02B- Granted patents
- 12,237
- Published applications
- 14,851
- Assignees
- 3,308
- Inventors
- 23,170
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 27 | 0 |
| 1977 | 22 | 0 |
| 1978 | 20 | 0 |
| 1979 | 17 | 0 |
| 1980 | 20 | 0 |
| 1981 | 21 | 0 |
| 1982 | 23 | 0 |
| 1983 | 23 | 0 |
| 1984 | 13 | 0 |
| 1985 | 28 | 0 |
| 1986 | 21 | 0 |
| 1987 | 28 | 0 |
| 1988 | 29 | 0 |
| 1989 | 39 | 0 |
| 1990 | 45 | 0 |
| 1991 | 44 | 0 |
| 1992 | 57 | 0 |
| 1993 | 75 | 0 |
| 1994 | 59 | 0 |
| 1995 | 68 | 0 |
| 1996 | 100 | 0 |
| 1997 | 91 | 0 |
| 1998 | 133 | 0 |
| 1999 | 117 | 0 |
| 2000 | 147 | 0 |
| 2001 | 157 | 53 |
| 2002 | 152 | 180 |
| 2003 | 148 | 226 |
| 2004 | 172 | 273 |
| 2005 | 151 | 288 |
| 2006 | 180 | 266 |
| 2007 | 170 | 354 |
| 2008 | 166 | 367 |
| 2009 | 153 | 384 |
| 2010 | 217 | 387 |
| 2011 | 268 | 379 |
| 2012 | 271 | 443 |
| 2013 | 302 | 440 |
| 2014 | 383 | 616 |
| 2015 | 419 | 823 |
| 2016 | 520 | 822 |
| 2017 | 658 | 946 |
| 2018 | 714 | 897 |
| 2019 | 822 | 1004 |
| 2020 | 863 | 985 |
| 2021 | 808 | 1074 |
| 2022 | 664 | 1034 |
| 2023 | 672 | 924 |
| 2024 | 788 | 773 |
| 2025 | 736 | 562 |
| 2026 | 416 | 351 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G02B 5/22Absorbing filters3,381
- G02B 5/201In the form of arrays3,091
- G02B 5/208For use with infrared or ultraviolet radiation2,962
- G02B 5/28Interference filters2,954
- G02B 5/26Reflecting filters871
- G02B 5/206Comprising particles embedded in a solid matrix328
- G02B 5/203Having holographic or diffractive elements311
- G02B 5/205Neutral density filters300
Recent patents
- Organic substrate for placing components of a camera6 Oct 2026US 12,756,912 B1Apple Inc.
- Light emitting device with LED stack for display and display apparatus having the same6 Oct 2026US 12,757,525 B2Seoul Viosys Co., Ltd.
- Color filter film and display device including the same6 Oct 2026US 12,757,607 B2LG Display Co., Ltd.
- Display device6 Oct 2026US 12,757,617 B2Samsung Display Co., Ltd.
- Optical sensing systems29 Sep 2026US 12,748,211 B23M Innovative Properties Company
- Cultivating methods and apparatuses8 Oct 2026US 2026/0305597 A1
- Compound, coating composition and film8 Oct 2026US 2026/0308409 A1Industrial Technology Research Institute
- Light control film and method of manufacture thereof8 Oct 2026US 2026/0309900 A13M Innovative Properties Company
- Platen for an Elliptical Transducer8 Oct 2026US 2026/0309904 A1QorTek, Inc.
- Laminate, display device, and organic electroluminescent display device8 Oct 2026US 2026/0314244 A1FUJIFILM Corporation
Most cited
By later US patents
- Optical filter for spectroscopic measurement and method of producing the optical filter1,209US 5,760,910 AMasimo Corporation · 1998
- Optical filter for spectroscopic measurement and method of producing the optical filter1,055US 5,940,182 AMasimo Corporation · 1999
- Optical filter for spectroscopic measurement and method of producing the optical filter1,032US 6,278,522 B1Masimo Laboratories, Inc. · 2001
- Virtual and augmented reality systems and methods701US 9,791,700 B2Magic Leap, Inc. · 2017
- Device having a light-absorbing mask and a method for fabricating same610US 6,741,377 B2Iridigm Display Corporation · 2004