G02B 5/24
Liquid filters
Official title: Liquid filters (G02B5/23 takes precedence)
G02B5/24 (Liquid filters) appears on 91 US grants and 73 published applications in this corpus.
Search patents in G02B- Granted patents
- 91
- Published applications
- 73
- Assignees
- 86
- Inventors
- 249
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 6 |
| 2005 | 1 | 4 |
| 2006 | 2 | 0 |
| 2007 | 3 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 2 | 3 |
| 2011 | 0 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 9 |
| 2014 | 4 | 5 |
| 2015 | 2 | 4 |
| 2016 | 3 | 2 |
| 2017 | 3 | 2 |
| 2018 | 1 | 4 |
| 2019 | 2 | 4 |
| 2020 | 2 | 4 |
| 2021 | 4 | 5 |
| 2022 | 0 | 3 |
| 2023 | 1 | 4 |
| 2024 | 4 | 1 |
| 2025 | 1 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical film, optical laminate, and image display device30 Jun 2026US 12,668,744 B2FUJIFILM Corporation
- Light route control member and display device comprising same24 Mar 2026US 12,585,161 B2LG Innotek Co., Ltd.
- Optical path control member and display device comprising same4 Mar 2025US 12,242,091 B2LG Innotek Co., Ltd.
- Composition, film, optical filter, laminate, solid-state imaging element, image display device, and infrared sensor26 Nov 2024US 12,152,139 B2FUJIFILM Corporation
- Graduated electro-optic device and method15 Oct 2024US 12,117,701 B2Aplphamicron Incorporated
- Light absorption anisotropic film, laminate, composite lens, and virtual reality display apparatus1 Jan 2026US 2026/0003112 A1FUJIFILM Corporation
- Switchable light filter, lighting device and screen20 Nov 2025US 2025/0355292 A1siOPTICA GmbH
- Emulsion spectral fluid filter capable of controlling light wavelength absorption, and manufacturing method therefor3 Apr 2025US 2025/0113656 A1Korea University Research and Business Foundation
- Graduated electro-optic device and method13 Feb 2025US 2025/0053048 A1Alphamicron Incorporated
- Reconfigurable Apparel Manufacture and Business Processes28 Mar 2024US 2024/0099425 A1
Most cited
By later US patents
- Optical notch filter utilizing electric dipole resonance absorption204US 4,099,854 AThe Unites States of America as represented by the Secretary of the Navy · 1978
- Curing light170US 5,803,729 A1998
- Crystalline colloidal narrow band radiation filter62US 4,632,517 AUniversity of Pittsburgh · 1986
- Optical devices with fluidic systems44US 7,027,683 B2Nanostream, Inc. · 2006
- Narrow band radiation filter films40US 5,266,238 AAmerican Cyanamid Company · 1993