C09K 15/20
Containing nitrogen and oxygen
Official title: containing nitrogen and oxygen
C09K15/20 (Containing nitrogen and oxygen) appears on 238 US grants and 208 published applications in this corpus.
Search patents in C09K- Granted patents
- 238
- Published applications
- 208
- Assignees
- 133
- Inventors
- 491
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 14 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 7 | 3 |
| 2003 | 6 | 5 |
| 2004 | 2 | 4 |
| 2005 | 1 | 2 |
| 2006 | 0 | 5 |
| 2007 | 1 | 6 |
| 2008 | 1 | 4 |
| 2009 | 4 | 5 |
| 2010 | 3 | 4 |
| 2011 | 3 | 3 |
| 2012 | 3 | 2 |
| 2013 | 2 | 11 |
| 2014 | 5 | 13 |
| 2015 | 3 | 17 |
| 2016 | 17 | 18 |
| 2017 | 14 | 17 |
| 2018 | 13 | 11 |
| 2019 | 15 | 10 |
| 2020 | 10 | 17 |
| 2021 | 7 | 9 |
| 2022 | 9 | 14 |
| 2023 | 9 | 8 |
| 2024 | 9 | 10 |
| 2025 | 6 | 7 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stabilizer composition for silyl-modified polymer sealants25 Aug 2026US 12,715,980 B2Clariant International Ltd.
- Succinic anhydride-derived polyesters as corrosion inhibitors25 Aug 2026US 12,716,028 B2Ecolab USA Inc.
- Hydrocarbon functionalized polyamines for corrosion inhibition4 Aug 2026US 12,698,256 B2Ecolab USA Inc.
- Amphoteric compounds6 Jan 2026US 12,516,019 B2Eastman Chemical Company
- Alkyl lactone-derived corrosion inhibitors6 Jan 2026US 12,516,237 B2
- Stabilizer composition for silyl-modified polymer sealants6 Aug 2026US 2026/0226257 A1Clariant International Ltd.
- Polyamine-polyesters as corrosion inhibition11 Jun 2026US 2026/0159756 A1Ecolab USA Inc.
- Synthesis of tetradecanoic modified graphene as a corrosion inhibitor1 Jan 2026US 2026/0001768 A1King Fahd University of Petroleum and Minerals
- Algal-based corrosion inhibitor compositions and methods thereof4 Dec 2025US 2025/0368894 A1Saudi Arabian Oil Company
- Compositions and methods of treating metal surfaces in surface preparation processes25 Sep 2025US 2025/0297371 A1Chemtreat, Inc.
Most cited
By later US patents
- Preservation of cell-free RNA in blood samples167US 8,304,187 B2Streck, Inc. · 2012
- Compositions stabilized with N-hydroxyiminodiacetic and dipropionic acids and esters thereof88US 4,720,517 ACiba-Geigy Corporation · 1988
- Malonic acid ester/triazole mixed blocked HDI trimer/formaldehyde stabilization52US 6,559,264 B1Bayer Aktiengesellschaft · 2003
- Organic materials stabilized by compounds containing both amine and hindered phenol functional functionalities49US 5,834,544 AUniroyal Chemical Company, Inc. · 1998
- Polymeric antioxidants40US 7,223,432 B2The United States of America as represented by the Secretary of the Army · 2007