C02F 1/004
Using large scale industrial sized filters
Official title: {using large scale industrial sized filters}
C02F1/004 (Using large scale industrial sized filters) appears on 1,292 US grants and 1,920 published applications in this corpus.
Search patents in C02F- Granted patents
- 1,292
- Published applications
- 1,920
- Assignees
- 1,065
- Inventors
- 3,631
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 7 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 1 |
| 2002 | 4 | 3 |
| 2003 | 7 | 25 |
| 2004 | 11 | 19 |
| 2005 | 14 | 28 |
| 2006 | 14 | 30 |
| 2007 | 25 | 40 |
| 2008 | 20 | 41 |
| 2009 | 19 | 36 |
| 2010 | 22 | 54 |
| 2011 | 26 | 53 |
| 2012 | 31 | 45 |
| 2013 | 24 | 64 |
| 2014 | 35 | 85 |
| 2015 | 32 | 71 |
| 2016 | 33 | 92 |
| 2017 | 54 | 104 |
| 2018 | 60 | 117 |
| 2019 | 96 | 111 |
| 2020 | 103 | 153 |
| 2021 | 125 | 155 |
| 2022 | 136 | 143 |
| 2023 | 100 | 143 |
| 2024 | 100 | 127 |
| 2025 | 96 | 100 |
| 2026 | 62 | 80 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Efficient nitrogen and phosphorus removal process system for mariculture tail water treatment15 Sep 2026US 12,735,339 B2Tianjin Research Institute for Water Transport Engineering, M.O.T.
- Enhanced foam fractionation of oil phase from aqueous/oil mixed phase via increased viscoelasticity8 Sep 2026US 12,729,140 B2Ecolab USA Inc.
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- Adjustable weir for a collection trough, a collection trough and a collection trough assembly24 Sep 2026US 2026/0284558 A1Roberts Water Technologies, Inc.
- Trash intercepting and sediment barrier device17 Sep 2026US 2026/0275669 A1China Three Gorges University
- Powdered adsorbent lossless recovery method based on belt filter10 Sep 2026US 2026/0263973 A1Zhejiang Yongzheng Lithium Technology Co., Ltd.
- Onsite thermal evaporation and treatment system for produced wastewater in oil and gas operations10 Sep 2026US 2026/0265084 A1
- Portable apparatus and method for purifying water for drinking from sources that may contain nuclear, biological, or chemical contaminants (nbc)10 Sep 2026US 2026/0265087 A1
Most cited
By later US patents
- Nanofiber filter media194US 6,872,311 B2Koslow Technologies Corporation · 2005
- Microporous filter media, filtration systems containing same, and methods of making and using143US 6,835,311 B2Koslow Technologies Corporation · 2004
- Continuous process for the reclamation of waste drilling fluids141US 4,482,459 ANewpark Waste Treatment Systems Inc. · 1984
- Microporous filter media, filtration systems containing same, and methods of making and using114US 6,630,016 B2Koslow Technologies Corporation · 2003
- Process for treatment of aqueous environments containing a water soluble polymer74US 6,623,643 B2Microtek Medical Holdings, Inc. · 2003