C11D 7/3281
Heterocyclic compounds
Official title: {Heterocyclic compounds}
C11D7/3281 (Heterocyclic compounds) appears on 393 US grants and 438 published applications in this corpus.
Search patents in C11D- Granted patents
- 393
- Published applications
- 438
- Assignees
- 208
- Inventors
- 964
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 9 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 12 | 0 |
| 2001 | 19 | 5 |
| 2002 | 11 | 21 |
| 2003 | 18 | 14 |
| 2004 | 9 | 32 |
| 2005 | 10 | 22 |
| 2006 | 14 | 22 |
| 2007 | 12 | 20 |
| 2008 | 7 | 14 |
| 2009 | 14 | 12 |
| 2010 | 11 | 15 |
| 2011 | 10 | 10 |
| 2012 | 9 | 5 |
| 2013 | 7 | 16 |
| 2014 | 15 | 13 |
| 2015 | 10 | 22 |
| 2016 | 11 | 25 |
| 2017 | 19 | 13 |
| 2018 | 14 | 14 |
| 2019 | 12 | 21 |
| 2020 | 15 | 12 |
| 2021 | 15 | 12 |
| 2022 | 10 | 24 |
| 2023 | 8 | 15 |
| 2024 | 9 | 20 |
| 2025 | 13 | 22 |
| 2026 | 9 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Surface treatment method to remove contaminated and implanted waveguide surface23 Jun 2026US 12,662,650 B2APPLIED Materials.Inc.
- 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
- Composition and process for selectively etching a hard mask and/or an etch-stop layer in the presence of layers of low-k materials, copper, cobalt and/or tungsten31 Mar 2026US 12,590,274 B2BASF SE
- Surface treatment composition, surface treatment method, and method for producing semiconductor substrate24 Mar 2026US 12,584,083 B2Fujimi Incorporated
- Processing solution, method for processing semiconductor substrate, and method for manufacturing semiconductor device1 Oct 2026US 2026/0297465 A1Tokyo Ohka Kogyo.Co., Ltd.
- Cleaning compositions with n-substituted piperazines24 Sep 2026US 2026/0286257 A1Dow Global Technologies LLC
- Treatment liquid, cleaning method for object to be treated, and manufacturing method of electronic device13 Aug 2026US 2026/0234507 A1FUJIFILM Corporation
- Water-soluble automatic dishwashing detergent pouch23 Jul 2026US 2026/0209648 A1The Procter & Gamble Company
- Cleaning composition for organic and inorganic materials, method for cleaning using the same and electronic device manufactured using the same16 Jul 2026US 2026/0201282 A1Poong Won Chemical Co., Ltd.
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
- Disposable semi-moist wipes85US 4,725,489 AAirwick Industries, Inc. · 1988