C02F 2209/44
Time
C02F2209/44 (Time) appears on 704 US grants and 985 published applications in this corpus.
Search patents in C02F- Granted patents
- 704
- Published applications
- 985
- Assignees
- 577
- Inventors
- 2,272
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 14 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 13 | 4 |
| 2002 | 17 | 16 |
| 2003 | 7 | 10 |
| 2004 | 8 | 18 |
| 2005 | 5 | 23 |
| 2006 | 8 | 29 |
| 2007 | 13 | 7 |
| 2008 | 12 | 20 |
| 2009 | 17 | 14 |
| 2010 | 22 | 29 |
| 2011 | 7 | 32 |
| 2012 | 8 | 32 |
| 2013 | 26 | 38 |
| 2014 | 27 | 44 |
| 2015 | 15 | 42 |
| 2016 | 27 | 65 |
| 2017 | 37 | 47 |
| 2018 | 40 | 56 |
| 2019 | 43 | 43 |
| 2020 | 38 | 47 |
| 2021 | 35 | 40 |
| 2022 | 43 | 73 |
| 2023 | 34 | 82 |
| 2024 | 32 | 67 |
| 2025 | 52 | 62 |
| 2026 | 31 | 45 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Separating ions in water using plastic ice VII29 Sep 2026US 12,747,165 B2International Business Machines Corporation
- Method for high-value application of PTA residue high-concentration bromine-containing wastewater to preparation of cuprous bromide22 Sep 2026US 12,741,881 B2Jiangsu University of Technology
- Oil-water mixture treatment device and method15 Sep 2026US 12,735,334 B2China Petroleum & Chemical Corporation
- System and method for treating nitrate nitrogen sewage by constructed wetland15 Sep 2026US 12,735,336 B2Southern University of Science and Technology
- Water sanitization device, system and method1 Sep 2026US 12,722,991 B2Waterco Limited
- Water treatment method and water treatment device8 Oct 2026US 2026/0308029 A1Organo Corporation
- System for determining filter status1 Oct 2026US 2026/0296923 A1
- Water treatment method and water treatment apparatus1 Oct 2026US 2026/0296934 A1Organo Corporation
- Systems for catalytically removing per- and polyfluoroalkyl substances from a fluid and related methods1 Oct 2026US 2026/0296939 A1Arizona Board of Regents on behalf of Arizona State University
- A water treatment cartridge1 Oct 2026US 2026/0296943 A1HCL Technologies Limited
Most cited
By later US patents
- Medicament preparation and treatment devices, methods, and systems259US 10,478,544 B2NxStage Medical, Inc. · 2019
- Electronic monitoring unit for monitoring number of uses of cartridge155US 5,328,597 AThe Clorox Company · 1994
- Water treatment device having means to count times used and limit useage145US 5,190,643 AMr. Coffee, Inc. · 1993
- Water filtering system with replaceable cartridge for a refrigerator138US 6,120,685 AMaytag Corporation · 2000
- Cyclic aeration system for submerged membrane modules132US 6,245,239 B1Zenon Environmental Inc. · 2001