C11D 7/32
Containing nitrogen
Official title: containing nitrogen
C11D7/32 (Containing nitrogen) appears on 1,235 US grants and 1,415 published applications in this corpus.
Search patents in C11D- Granted patents
- 1,235
- Published applications
- 1,415
- Assignees
- 522
- Inventors
- 2,805
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 10 | 0 |
| 1993 | 12 | 0 |
| 1994 | 13 | 0 |
| 1995 | 27 | 0 |
| 1996 | 17 | 0 |
| 1997 | 32 | 0 |
| 1998 | 28 | 0 |
| 1999 | 30 | 0 |
| 2000 | 41 | 0 |
| 2001 | 48 | 26 |
| 2002 | 37 | 51 |
| 2003 | 43 | 45 |
| 2004 | 26 | 63 |
| 2005 | 21 | 69 |
| 2006 | 38 | 73 |
| 2007 | 25 | 50 |
| 2008 | 27 | 40 |
| 2009 | 32 | 60 |
| 2010 | 30 | 55 |
| 2011 | 38 | 47 |
| 2012 | 32 | 47 |
| 2013 | 31 | 59 |
| 2014 | 51 | 51 |
| 2015 | 38 | 62 |
| 2016 | 46 | 75 |
| 2017 | 51 | 55 |
| 2018 | 47 | 51 |
| 2019 | 43 | 63 |
| 2020 | 47 | 55 |
| 2021 | 53 | 46 |
| 2022 | 42 | 67 |
| 2023 | 30 | 54 |
| 2024 | 31 | 57 |
| 2025 | 32 | 49 |
| 2026 | 27 | 45 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C11D 7/3209Amines or imines with one to four nitrogen atoms456
- C11D 7/3281Heterocyclic compounds393
- C11D 7/3218Alkanolamines or alkanolimines344
- C11D 7/3245Aminoacids308
- C11D 7/3263Amides or imides162
- C11D 7/3227Ethers thereof118
- C11D 7/3272Urea, guanidine or derivatives thereof94
- C11D 7/3254Esters or carbonates thereof61
Recent patents
- Cleaning booster6 Oct 2026US 12,753,369 B2Dow Global Technologies LLC
- Treatment compositions with modified amino acid multimers11 Aug 2026US 12,703,837 B2The Procter & Gamble Company
- Metal complexes-containing dishwashing detergents14 Jul 2026US 12,680,052 B2Henkel AG & Co. KGaA
- Surface treatment method to remove contaminated and implanted waveguide surface23 Jun 2026US 12,662,650 B2APPLIED Materials.Inc.
- Cleaning compositions16 Jun 2026US 12,655,367 B2Fujifilm Electronic Materials U.S.A., Inc.
- Processing solution, method for processing semiconductor substrate, and method for manufacturing semiconductor device1 Oct 2026US 2026/0297465 A1Tokyo Ohka Kogyo.Co., Ltd.
- Cleaning composition and method of forming photoresist pattern using the same1 Oct 2026US 2026/0297468 A1Dongwoo Fine-Chem Co., Ltd.
- Cleaning composition and method of forming photoresist pattern using the same1 Oct 2026US 2026/0297469 A1Dongwoo Fine-Chem Co., Ltd.
- Surface treatment agent, silicon compound, and method for suppressing pattern collapse when substrate surface is cleaned with cleaning liquid24 Sep 2026US 2026/0286256 A1Tokyo Ohka Kogyo.Co., Ltd.
- Cleaning compositions with n-substituted piperazines24 Sep 2026US 2026/0286257 A1Dow Global Technologies LLC
Most cited
By later US patents
- Upright extraction cleaning machine240US 6,131,237 ABISSELL Homecare, Inc. · 2000
- Compact cleaner containing surfactants167US 6,331,518 B2Henkel-Ecolab GmbH & Co. OHG · 2001
- Upright extraction cleaning machine158US 6,167,587 ABISSELL Homecare, Inc. · 2001
- Cleaning compositions for removing etching residue and method of using150US 5,334,332 AEKC Technology, Inc. · 1994
- Post clean treatment composition comprising an organic acid and hydroxylamine137US 5,981,454 AEKC Technology, Inc. · 1999