C08K 5/0041
Optical brightening agents, organic pigments
Official title: {Optical brightening agents, organic pigments}
C08K5/0041 (Optical brightening agents, organic pigments) appears on 1,264 US grants and 1,636 published applications in this corpus.
Search patents in C08K- Granted patents
- 1,264
- Published applications
- 1,636
- Assignees
- 772
- Inventors
- 4,036
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 11 | 0 |
| 1978 | 15 | 0 |
| 1979 | 9 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 9 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 13 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 7 | 0 |
| 1992 | 13 | 0 |
| 1993 | 14 | 0 |
| 1994 | 11 | 0 |
| 1995 | 21 | 0 |
| 1996 | 21 | 0 |
| 1997 | 17 | 0 |
| 1998 | 16 | 0 |
| 1999 | 22 | 0 |
| 2000 | 17 | 0 |
| 2001 | 15 | 6 |
| 2002 | 20 | 18 |
| 2003 | 25 | 47 |
| 2004 | 24 | 56 |
| 2005 | 24 | 63 |
| 2006 | 23 | 49 |
| 2007 | 29 | 61 |
| 2008 | 13 | 58 |
| 2009 | 21 | 53 |
| 2010 | 39 | 65 |
| 2011 | 33 | 58 |
| 2012 | 40 | 52 |
| 2013 | 33 | 49 |
| 2014 | 40 | 34 |
| 2015 | 38 | 47 |
| 2016 | 22 | 59 |
| 2017 | 38 | 58 |
| 2018 | 49 | 69 |
| 2019 | 28 | 105 |
| 2020 | 71 | 122 |
| 2021 | 59 | 121 |
| 2022 | 59 | 99 |
| 2023 | 75 | 86 |
| 2024 | 66 | 74 |
| 2025 | 70 | 68 |
| 2026 | 37 | 59 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Curable photochromic composition22 Sep 2026US 12,742,037 B2Transitions Optical, Inc.
- Adhesive sheet, display device using the same, composition for forming adhesive layer used for production of adhesive film8 Sep 2026US 12,729,323 B2Toppan Inc.
- Epoxy resin composition and ignition coil25 Aug 2026US 12,715,959 B2KYOCERA Corporation
- Optical film, display device, and composition for forming colored layer18 Aug 2026US 12,710,566 B2Toppan Inc.
- Pneumatic tire and vehicle4 Aug 2026US 12,700,229 B2The Yokohama Rubber Co., Ltd.
- Protective coating composition24 Sep 2026US 2026/0286177 A1Jotun A/S
- Silicone impression material with accelerated curing10 Sep 2026US 2026/0265522 A1Kulzer GmbH
- Pigment composition, coloring composition for color filter, and color filter10 Sep 2026US 2026/0265544 A1DIC Corporation
- Copolymerized polyester resin and preparation method thereof3 Sep 2026US 2026/0258196 A1SK Chemicals Co., Ltd.
- Polycarbonate Composition and Shaped Articles Made Therefrom27 Aug 2026US 2026/0250486 A1Covestro Deutschland AG
Most cited
By later US patents
- Polyurethane resins having multiple mechanisms of hardening for use in producing three-dimensional objects271US 9,453,142 B2Carbon3D, Inc. · 2016
- Luminescent gel coats and moldable resins190US 6,207,077 B1Orion 21 A.D. PTY LTD · 2001
- Thermochromic materials183US 4,028,118 AThe Pilot Ink Co., Ltd. · 1977
- Photochromic naphthopyran compounds182US 5,384,077 ATransitions Optical, Inc. · 1995
- Methods of producing three-dimensional objects from materials having multiple mechanisms of hardening165US 9,676,963 B2Carbon, Inc. · 2017