C09K 2205/106
Carbon dioxide
C09K2205/106 (Carbon dioxide) appears on 163 US grants and 266 published applications in this corpus.
Search patents in C09K- Granted patents
- 163
- Published applications
- 266
- Assignees
- 74
- Inventors
- 303
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 3 |
| 2004 | 2 | 3 |
| 2005 | 3 | 3 |
| 2006 | 1 | 7 |
| 2007 | 0 | 4 |
| 2008 | 1 | 6 |
| 2009 | 3 | 11 |
| 2010 | 2 | 8 |
| 2011 | 10 | 5 |
| 2012 | 2 | 7 |
| 2013 | 3 | 7 |
| 2014 | 6 | 10 |
| 2015 | 2 | 7 |
| 2016 | 5 | 8 |
| 2017 | 9 | 6 |
| 2018 | 5 | 16 |
| 2019 | 6 | 15 |
| 2020 | 11 | 37 |
| 2021 | 16 | 29 |
| 2022 | 15 | 21 |
| 2023 | 12 | 14 |
| 2024 | 8 | 15 |
| 2025 | 9 | 15 |
| 2026 | 7 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Low GWP refrigerant blends18 Aug 2026US RE50,995 E1RPL Holdings Limited
- Refrigeration system with oil control system28 Jul 2026US 12,693,048 B2Hill Phoenix, Inc.
- Near-azeotropic refrigerant of ternary mixture CO2/R41/R17021 Jul 2026US 12,686,801 B2Anhui University of Technology
- Refrigerant compositions5 May 2026US 12,617,990 B2Mexichem Fluor S.A. De C.V.
- Refrigerant compositions28 Apr 2026US 12,612,542 B2Mexichem Fluor S.A. De C.V.
- Compositions1 Oct 2026US 2026/0297407 A1
- Hydrocarbon additives for 1234yf and hfc compositions, methods for their production, storage and usage3 Sep 2026US 2026/0258291 A1The Chemours Company Fc, LLC
- Energy efficient non-flammable refrigeration for co2-rich process streams25 Jun 2026US 2026/0177314 A1Uop LLC
- Working medium for heat cycle, method for storing working medium for heat cycle, method for manufacturing working medium for heat cycle,composition for heat cycle system, and storage container for working medium for heat cycle28 May 2026US 2026/0146193 A1AGC Inc.
- Working medium, composition for heat cycle system, heat cycle system, and heat cycle method16 Apr 2026US 2026/0103632 A1AGC Inc.
Most cited
By later US patents
- Non-azeotropic refrigerant compositions containing carbon dioxide76US 5,736,063 AAlliedSignal Inc. · 1998
- Azeotrope-like compositions containing difluoromethane, pentafluoroethane, and carbon dioxide73US 5,744,052 AE. I. Du Pont de Nemours and Company · 1998
- Reduced pressure carbon dioxide-based refrigeration system63US 6,112,547 ASpauschus Associates, Inc. · 2000
- Refrigerator oil for carbon dioxide refrigerant, and method of using it for lubrication55US 6,306,803 B1Idemitsu Kosan Co., Ltd. · 2001
- Compositions comprising a fluoroolefin50US 7,569,170 B2E. I. Du Pont de Nemours and Company · 2009