C02F 5/12
Containing nitrogen
Official title: containing nitrogen (C02F5/14 takes precedence)
C02F5/12 (Containing nitrogen) appears on 601 US grants and 304 published applications in this corpus.
Search patents in C02F- Granted patents
- 601
- Published applications
- 304
- Assignees
- 203
- Inventors
- 978
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 10 | 0 |
| 1978 | 9 | 0 |
| 1979 | 8 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 22 | 0 |
| 1985 | 17 | 0 |
| 1986 | 16 | 0 |
| 1987 | 30 | 0 |
| 1988 | 16 | 0 |
| 1989 | 20 | 0 |
| 1990 | 34 | 0 |
| 1991 | 15 | 0 |
| 1992 | 19 | 0 |
| 1993 | 11 | 0 |
| 1994 | 18 | 0 |
| 1995 | 17 | 0 |
| 1996 | 16 | 0 |
| 1997 | 17 | 0 |
| 1998 | 18 | 0 |
| 1999 | 17 | 0 |
| 2000 | 13 | 0 |
| 2001 | 11 | 1 |
| 2002 | 9 | 7 |
| 2003 | 8 | 15 |
| 2004 | 5 | 15 |
| 2005 | 4 | 11 |
| 2006 | 9 | 7 |
| 2007 | 7 | 13 |
| 2008 | 8 | 8 |
| 2009 | 1 | 9 |
| 2010 | 10 | 12 |
| 2011 | 12 | 7 |
| 2012 | 3 | 11 |
| 2013 | 5 | 10 |
| 2014 | 8 | 12 |
| 2015 | 8 | 16 |
| 2016 | 14 | 15 |
| 2017 | 9 | 16 |
| 2018 | 13 | 12 |
| 2019 | 11 | 13 |
| 2020 | 13 | 21 |
| 2021 | 11 | 14 |
| 2022 | 12 | 14 |
| 2023 | 15 | 17 |
| 2024 | 13 | 6 |
| 2025 | 5 | 14 |
| 2026 | 3 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of inhibiting corrosion of a metal in an industrial water system21 Jul 2026US 12,686,929 B2Ecolab USA Inc.
- Methods and compositions to reduce azoles and AOX corrosion inhibitors9 Jun 2026US 12,649,675 B2Bl Technologies, Inc.
- Application of surfmers to mitigate fouling in olefins plants5 May 2026US 12,618,017 B2Sabic Global Technologies B.V.
- Salt separation and destruction of PFAS utilizing reverse osmosis and salt separation29 Jul 2025US 12,371,358 B2Revive Environmental Technology, LLC
- Cleaning agent, cleaning method of water treatment apparatus, and cleaning method of silica-based scale29 Jul 2025US 12,371,638 B2Kurita Water Industries Ltd.
- Method of Inhibiting Corrosion of a Metal in an Industrial Water System1 Oct 2026US 2026/0297758 A1Ecolab USA Inc.
- Treatments for controlling liquid and vapor phase corrosion with film-forming compounds25 Jun 2026US 2026/0176770 A1Chemtreat, Inc.
- Fluorescent moiety tagged polymers for use in monitoring cleanliness of mold surfaces25 Jun 2026US 2026/0176771 A1Chemtreat, Inc.
- Method and system for controlling scale deposition in a geothermal system18 Jun 2026US 2026/0167542 A1Chemtreat, Inc.
- Use of polycarboxylated-beta-amino alcohols for dissolution of inorganic salts26 Feb 2026US 2026/0055015 A1Ecolab USA Inc.
Most cited
By later US patents
- Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers144US 4,640,793 ACalgon Corporation · 1987
- Polyaspartic acid from maleic acid and ammonia116US 4,839,461 ABayer Aktiengesellschaft · 1989
- Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers108US 4,936,987 ACalgon Corporation · 1990
- Copolymer and method for manufacture thereof96US 4,471,100 ANippon Shokubai Kagaku Kogyo Co., Ltd. · 1984
- Method of stabilizing aqueous systems90US 4,711,725 ARohm and Haas Company · 1987