A23K 20/179
Colouring agents
Official title: Colouring agents, e.g. pigmenting or dyeing agents
A23K20/179 (Colouring agents) appears on 217 US grants and 455 published applications in this corpus.
Search patents in A23K- Granted patents
- 217
- Published applications
- 455
- Assignees
- 205
- Inventors
- 918
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 3 |
| 2002 | 6 | 6 |
| 2003 | 5 | 9 |
| 2004 | 3 | 16 |
| 2005 | 2 | 16 |
| 2006 | 6 | 19 |
| 2007 | 4 | 21 |
| 2008 | 4 | 28 |
| 2009 | 0 | 13 |
| 2010 | 0 | 17 |
| 2011 | 3 | 12 |
| 2012 | 9 | 23 |
| 2013 | 7 | 21 |
| 2014 | 12 | 18 |
| 2015 | 9 | 22 |
| 2016 | 9 | 30 |
| 2017 | 14 | 25 |
| 2018 | 6 | 26 |
| 2019 | 10 | 18 |
| 2020 | 8 | 21 |
| 2021 | 12 | 18 |
| 2022 | 11 | 15 |
| 2023 | 10 | 28 |
| 2024 | 8 | 12 |
| 2025 | 4 | 12 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heterologous carotenoid production in microorganisms22 Sep 2026US 12,742,193 B2KnipBio, Inc.
- Carotenoid compound coming from plant and containing natural astaxanthin, preparation method therefor, and composition26 May 2026US 12,636,263 B2Zhejiang Medicine Co., Ltd.Xinchang Pharmaceutical Factory
- Stable carotenoid microcapsule having high bioavailability and preparation method therefor5 May 2026US 12,616,227 B2Xinchang Nhu Vitamins Company Ltd.
- Composition containing quercetagetin6 Jan 2026US 12,514,266 B2Chenguang Biotech Group Co., Ltd.
- Planococcus sp. strain having astaxanthin secreting ability, and use thereof30 Dec 2025US 12,509,658 B2Daegugyeongbuk Instituteof Science and Technology
- Dried Cheese Pet Chew Treat11 Jun 2026US 2026/0157398 A1Marcoot Jersey Creamery LLC
- Small dog food composition7 May 2026US 2026/0123651 A1Mars, Incorporated
- Plant-based hematophagous insect diet and methods of use9 Apr 2026US 2026/0096576 A1The Administrators of the Tulane Educational Fund
- Lutein-rich egg, zeaxanthin-rich egg, processed food, egg production method, and feed for laying hens12 Mar 2026US 2026/0068912 A1Takashima Sangyo Co., Ltd.
- Composition for supporting animal with cancer19 Feb 2026US 2026/0047586 A1Mars, Incorporated
Most cited
By later US patents
- Water dispersible carotenoid preparations and processes thereof64US 3,998,753 AHoffmann-La Roche Inc. · 1976
- Process for enhancing immune response in animals using .beta.-carotene as a dietary supplement54US 6,133,323 AThe Iams Company · 2000
- Process for the isomerization of lutein50US 5,523,494 AIndustrial Organica S.A. DE C.V. · 1996
- Pigmentation supplements for animal feed compositions44US 4,871,551 AMicrobio Resources, Inc. · 1989
- Production of zeaxanthin and zeaxanthin-containing compositions41US 5,308,759 AApplied Food Biotechnology, Inc. · 1994