C08K 5/22
Compounds containing nitrogen bound to another nitrogen atom
C08K5/22 (Compounds containing nitrogen bound to another nitrogen atom) appears on 599 US grants and 703 published applications in this corpus.
Search patents in C08K- Granted patents
- 599
- Published applications
- 703
- Assignees
- 448
- Inventors
- 2,110
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 18 | 0 |
| 1978 | 13 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 12 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 7 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 8 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 4 | 5 |
| 2003 | 5 | 2 |
| 2004 | 5 | 5 |
| 2005 | 1 | 10 |
| 2006 | 5 | 7 |
| 2007 | 4 | 15 |
| 2008 | 0 | 12 |
| 2009 | 2 | 15 |
| 2010 | 5 | 22 |
| 2011 | 10 | 16 |
| 2012 | 11 | 19 |
| 2013 | 7 | 16 |
| 2014 | 10 | 24 |
| 2015 | 24 | 56 |
| 2016 | 28 | 35 |
| 2017 | 36 | 24 |
| 2018 | 17 | 47 |
| 2019 | 22 | 58 |
| 2020 | 43 | 63 |
| 2021 | 40 | 50 |
| 2022 | 33 | 61 |
| 2023 | 28 | 42 |
| 2024 | 42 | 40 |
| 2025 | 33 | 38 |
| 2026 | 15 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flame-retardant vibration isolation rubber composition and flame-retardant vibration isolation rubber member6 Oct 2026US 12,753,294 B2Sumitomo Riko Company Limited
- Aqueous self-crosslinkable polyurethane dispersions22 Sep 2026US 12,742,035 B2BASF SE
- Molecular tetrahedron nanocage, its preparation, and uses thereof30 Jun 2026US 12,668,562 B2Purdue Research Foundation
- Expanded coating, preparation method and use thereof, and permanent magnet comprising same16 Jun 2026US 12,655,310 B2Yantai Zhenghai Magnetic Material Co., Ltd.
- Polyethylene composition for use with recycled polyethylene9 Jun 2026US 12,649,843 B2Sabic Global Technologies B.V.
- Three-dimensional printing with dihydrazide antioxidants17 Sep 2026US 2026/0273841 A1Peridot Print LLC
- Degradable crosslinking agent10 Sep 2026US 2026/0265184 A1Nagase Chemtex Corporation
- Radiation Curable Ink Composition For Ink Jet27 Aug 2026US 2026/0250533 A1Seiko Epson Corporation
- Degradable crosslinking agent20 Aug 2026US 2026/0242563 A1Nagase Chemtex Corporation
- Carbon nanotube dispersion and preparation method therefor6 Aug 2026US 2026/0225891 A1LG Chem.Ltd.
Most cited
By later US patents
- Water control151US 5,335,726 AHalliburton Company · 1994
- Polymer composition having delayed crystallization behavior, additive composition that influences the crystallization behavior, method for reducing the crystallization point and/or the crystallization speed, and use of an additive composition130US 10,138,354 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. · 2018
- 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