Y02P 20/54
Using solvents
Official title: using solvents, e.g. supercritical solvents or ionic liquids
Y02P20/54 (Using solvents) appears on 1,591 US grants and 1,654 published applications in this corpus.
Search patents in Y02P- Granted patents
- 1,591
- Published applications
- 1,654
- Assignees
- 1,098
- Inventors
- 4,675
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 11 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 15 | 0 |
| 1991 | 18 | 0 |
| 1992 | 18 | 0 |
| 1993 | 22 | 0 |
| 1994 | 25 | 0 |
| 1995 | 31 | 0 |
| 1996 | 28 | 0 |
| 1997 | 29 | 0 |
| 1998 | 35 | 0 |
| 1999 | 39 | 0 |
| 2000 | 28 | 0 |
| 2001 | 44 | 18 |
| 2002 | 43 | 38 |
| 2003 | 53 | 54 |
| 2004 | 26 | 69 |
| 2005 | 40 | 56 |
| 2006 | 27 | 67 |
| 2007 | 42 | 63 |
| 2008 | 34 | 56 |
| 2009 | 33 | 70 |
| 2010 | 54 | 86 |
| 2011 | 37 | 67 |
| 2012 | 49 | 85 |
| 2013 | 58 | 69 |
| 2014 | 64 | 74 |
| 2015 | 67 | 73 |
| 2016 | 52 | 56 |
| 2017 | 60 | 64 |
| 2018 | 58 | 88 |
| 2019 | 48 | 82 |
| 2020 | 66 | 64 |
| 2021 | 62 | 85 |
| 2022 | 39 | 73 |
| 2023 | 53 | 100 |
| 2024 | 53 | 43 |
| 2025 | 58 | 29 |
| 2026 | 20 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Process for the repeated irradiation of a radium target9 Jun 2026US 12,651,677 B2TerraPower Isotopes, LLC
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- Method for producing nitride crystal and nitride crystal2 Jun 2026US 12,644,201 B2Mitsubishi Chemical Corporation
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- Process for reducing fouling in high pressure polymerization27 Aug 2026US 2026/0250437 A1Borealis AG
- Farfarae flos and asteris radix et rhizoma cough-relieving granule composition and preparation method therefor30 Jul 2026US 2026/0216275 A1Jiangzhong Pharmaceutical Co., Ltd.
- Supercritical and subcritical fluid device, solvent extraction and separation method, and method for producing product16 Jul 2026US 2026/0199807 A1Tohoku University
Most cited
By later US patents
- Method for deuteration of a heterocyclic ring304US 7,517,990 B2Wako Pure Chemical Industries, Ltd. · 2009
- Methods and apparatus for fine particle formation201US 6,095,134 ABoard of Regents, The University of · 2000
- Methods for fine particle formation187US 5,639,441 ABoard of Regents of the University of Colorado · 1997
- Preparation of high porosity xerogels by chemical surface modification.163US 5,565,142 A1996
- Rapid aerogel production process158US 6,670,402 B1Aspen Aerogels, Inc. · 2003