C11D 7/3272
Urea, guanidine or derivatives thereof
Official title: {Urea, guanidine or derivatives thereof}
C11D7/3272 (Urea, guanidine or derivatives thereof) appears on 94 US grants and 93 published applications in this corpus.
Search patents in C11D- Granted patents
- 94
- Published applications
- 93
- Assignees
- 55
- Inventors
- 188
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 3 |
| 2002 | 5 | 6 |
| 2003 | 5 | 4 |
| 2004 | 1 | 4 |
| 2005 | 2 | 5 |
| 2006 | 4 | 4 |
| 2007 | 2 | 5 |
| 2008 | 2 | 2 |
| 2009 | 4 | 3 |
| 2010 | 4 | 3 |
| 2011 | 0 | 4 |
| 2012 | 4 | 4 |
| 2013 | 2 | 8 |
| 2014 | 3 | 0 |
| 2015 | 4 | 2 |
| 2016 | 0 | 3 |
| 2017 | 0 | 8 |
| 2018 | 4 | 4 |
| 2019 | 6 | 6 |
| 2020 | 0 | 3 |
| 2021 | 5 | 2 |
| 2022 | 2 | 4 |
| 2023 | 1 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cleaning agent composition and cleaning method12 May 2026US 12,624,318 B2Nissan Chemical Corporation
- Process solution composition for polymer treatment comprising a fluorine compound, a ketone solvent, and a polar aprotic solvent30 Dec 2025US 12,509,598 B2Dongwoo Fine-Chem Co., Ltd.
- Mechanism of urea/solid acid interaction under storage conditions and storage stable solid compositions comprising urea and acid24 Sep 2024US 12,096,769 B2Ecolab USA Inc.
- Hand sanitizers with improved aesthetics and skin-conditioning to encourage compliance with hand hygiene guidelines4 Jun 2024US 11,998,767 B2GOJO Industries, Inc.
- Antimicrobial composition comprising alkylated polyvinylpyrrolidone polymer14 Feb 2023US 11,576,379 B2The Procter & Gamble Company
- Lipid removal in detergents4 Jun 2026US 2026/0152700 A1Novozymes A/S
- Wafer cleaning device and wafer cleaning method21 May 2026US 2026/0143993 A1Samsung Electronics Co., Ltd.
- Cleansing wet wipe23 Oct 2025US 2025/0327002 A1Daio Paper Corporation
- Cleaning composition and method for manufacturing semiconductor substrate16 Jan 2025US 2025/0019623 A1FUJIFILM Corporation
- Mechanism of urea/solid acid interaction under storage conditions and storage stable solid compositions comprising urea and acid19 Dec 2024US 2024/0415117 A1Ecolab USA Inc.
Most cited
By later US patents
- 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
- Urea-based solid alkaline cleaning composition107US 5,474,698 AEcolab Inc. · 1995
- Stripping compositions comprising hydroxylamine and alkanolamine89US 5,279,771 AEKC Technology, Inc. · 1994
- Post clean treatment85US 6,156,661 AEKC Technology, Inc. · 2000