C11D 7/267
Heterocyclic compounds
Official title: {Heterocyclic compounds}
C11D7/267 (Heterocyclic compounds) appears on 151 US grants and 139 published applications in this corpus.
Search patents in C11D- Granted patents
- 151
- Published applications
- 139
- Assignees
- 111
- Inventors
- 377
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 10 | 0 |
| 2001 | 12 | 4 |
| 2002 | 7 | 5 |
| 2003 | 4 | 10 |
| 2004 | 3 | 9 |
| 2005 | 3 | 7 |
| 2006 | 4 | 2 |
| 2007 | 2 | 3 |
| 2008 | 6 | 5 |
| 2009 | 3 | 2 |
| 2010 | 4 | 2 |
| 2011 | 1 | 3 |
| 2012 | 3 | 5 |
| 2013 | 2 | 6 |
| 2014 | 5 | 8 |
| 2015 | 5 | 7 |
| 2016 | 4 | 7 |
| 2017 | 0 | 4 |
| 2018 | 4 | 4 |
| 2019 | 2 | 5 |
| 2020 | 1 | 4 |
| 2021 | 6 | 3 |
| 2022 | 4 | 9 |
| 2023 | 4 | 6 |
| 2024 | 3 | 6 |
| 2025 | 3 | 2 |
| 2026 | 2 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cleaning solution for high-yield-stress ceramic material 3D printing blank, preparation method therefor and use thereof9 Jun 2026US 12,649,894 B2Soochow University
- 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.
- Treatment liquid and substrate washing method14 Oct 2025US 12,441,965 B2FUJIFILM Corporation
- Thinner composition and method of processing surfaces of semiconductor substrates19 Aug 2025US 12,393,122 B2SK hynix Inc.
- Enzymatic cleaner for an automated clinical analyzer and methods of use thereof13 Aug 2026US 2026/0234511 A1Siemens Healthcare Diagnostics Inc.
- Substrate treatment solution16 Jul 2026US 2026/0201281 A1Merck Patent GmbH
- Self-assembled monolayer removing liquid, and substrate treating method and substrate treating apparatus using the same2 Jul 2026US 2026/0185021 A1SCREEN Holdings Co., Ltd.
- A blend of emollients18 Jun 2026US 2026/0165929 A1
- Antimicrobial materials and nanoparticles and methods of use thereof16 Apr 2026US 2026/0103663 A1Arizona Board of Regents on behalf of Arizona State University
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
- Stripping composition and method of using the same114US 4,617,251 AOlin Hunt Specialty Products Inc. · 1986
- Stripping compositions comprising hydroxylamine and alkanolamine89US 5,279,771 AEKC Technology, Inc. · 1994
- Post clean treatment85US 6,156,661 AEKC Technology, Inc. · 2000