C08K 5/23
Azo-compounds
C08K5/23 (Azo-compounds) appears on 306 US grants and 379 published applications in this corpus.
Search patents in C08K- Granted patents
- 306
- Published applications
- 379
- Assignees
- 273
- Inventors
- 1,136
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 0 |
| 2004 | 1 | 3 |
| 2005 | 0 | 3 |
| 2006 | 4 | 0 |
| 2007 | 2 | 6 |
| 2008 | 0 | 4 |
| 2009 | 0 | 5 |
| 2010 | 2 | 8 |
| 2011 | 1 | 7 |
| 2012 | 4 | 7 |
| 2013 | 1 | 9 |
| 2014 | 4 | 13 |
| 2015 | 16 | 42 |
| 2016 | 23 | 20 |
| 2017 | 22 | 13 |
| 2018 | 6 | 32 |
| 2019 | 13 | 39 |
| 2020 | 28 | 34 |
| 2021 | 25 | 30 |
| 2022 | 20 | 35 |
| 2023 | 17 | 25 |
| 2024 | 24 | 19 |
| 2025 | 19 | 15 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Expanded coating, preparation method and use thereof, and permanent magnet comprising same16 Jun 2026US 12,655,310 B2Yantai Zhenghai Magnetic Material Co., Ltd.
- Pigment dispersant composition, production method therefor, pigment dispersion, and actinic-ray-curable ink-jet ink26 May 2026US 12,637,531 B2Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- Water-soluble sheet-like coloring material, water-soluble sheet-like coloring material set, and paint set7 Apr 2026US 12,595,378 B2Kabushiki Kaisha Pilot Corporation
- Color changing coaxial polymer fibers31 Mar 2026US 12,590,204 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Adhesive film that can be wound and stamped31 Mar 2026US 12,590,230 B2Lohmann GmbH & Co. KG
- Radiation Curable Ink Composition For Ink Jet27 Aug 2026US 2026/0250533 A1Seiko Epson Corporation
- Carbon nanotube dispersion and preparation method therefor6 Aug 2026US 2026/0225891 A1LG Chem.Ltd.
- Glass fiber reinforced polyamide materials and methods for preparing thereof4 Jun 2026US 2026/0152626 A1Jiangsu Boiln Plastics Co., Ltd.
- Process for granulating azo compounds and granules obtained16 Apr 2026US 2026/0103581 A1Arkema France
- Reprocessable polymers and methods for the manufacture thereof26 Mar 2026US 2026/0085138 A1University of Massachusetts
Most cited
By later US patents
- Water control151US 5,335,726 AHalliburton Company · 1994
- Aqueous biocidal cationic dispersions of polymers and their use as fungicidal, bactericidal and algicidal treatment agents64US 5,049,383 AHoechst Aktiengesellschaft · 1991
- Pigmented peroxide and polyester compositions51US 4,460,719 A1984
- Rubber composition having excellent gripping power and rolling resistance, and production thereof48US 5,362,794 ASumitomo Chemical Company, Limited · 1994
- Process for preparing foamed and crosslinked shaped articles having improved heat-sealability and foamable and crosslinkable polyethylene resin composition used therefor44US 4,252,906 ASekisui Kagaku Kogyo Kabushiki Kaisha · 1981