Y02A 20/152
Water filtration
Y02A20/152 (Water filtration) appears on 183 US grants and 262 published applications in this corpus.
Search patents in Y02A- Granted patents
- 183
- Published applications
- 262
- Assignees
- 176
- Inventors
- 566
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 1 |
| 2004 | 3 | 5 |
| 2005 | 2 | 9 |
| 2006 | 1 | 2 |
| 2007 | 4 | 4 |
| 2008 | 3 | 7 |
| 2009 | 4 | 10 |
| 2010 | 4 | 13 |
| 2011 | 11 | 9 |
| 2012 | 8 | 7 |
| 2013 | 3 | 13 |
| 2014 | 4 | 16 |
| 2015 | 9 | 14 |
| 2016 | 1 | 18 |
| 2017 | 10 | 13 |
| 2018 | 16 | 18 |
| 2019 | 12 | 10 |
| 2020 | 11 | 12 |
| 2021 | 13 | 25 |
| 2022 | 5 | 14 |
| 2023 | 12 | 16 |
| 2024 | 9 | 6 |
| 2025 | 10 | 11 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for removing fats, oils and/or grease (FOGs) from water26 May 2026US 12,637,367 B2Buttress Group Ltd
- Apparatus, method and system for desalinating water using energy recovery12 May 2026US 12,623,930 B2Katz Water Tech, LLC
- Metal working fluid decontamination apparatus21 Apr 2026US 12,605,474 B2
- System for simulating urban spatial growth by coupling urban development with water resources environmental carrying capacity10 Mar 2026US 12,572,718 B2Beijing Univ Civil Engn & Architecture
- Integrated hyperspectral water quality analysis method20 Jan 2026US 12,529,652 B2Dalian University of Technology
- Systems, methods, and media for emergency water quality management in smart city pipe networks based on internet of things large models20 Aug 2026US 2026/0244190 A1Chengdu Qinchuan Iot Technology Co., Ltd.
- Integrated hydrodynamic and water quality simulation method for water supply systems of water treatment plants, pipe networks, and rivers14 May 2026US 2026/0134179 A1Tsinghua Shenzhen International Graduate School
- Method for large-scale prediction on water requirement of crop based on spatiotemporal fusion model under physical constraint16 Apr 2026US 2026/0105538 A1Information Technology Research Center, Beijing Academy of Agriculture and Forestry Sciences
- Water Distribution Regulation Method for Reclaimed Waterway Landscape Environments Based on Algae Risk Control5 Mar 2026US 2026/0061379 A1Zhejiang Institute of Hydraulics & Estuary (Zhejiang Institute of Marine Planning and Design)
- Critical path and intermediate node identification method for hidden water scarcity risk transmission based on betweenness centrality algorithm26 Feb 2026US 2026/0056712 A1Beijing Normal University
Most cited
By later US patents
- Portable, potable water recovery and dispensing apparatus121US 6,058,718 A2000
- Apparatus for the production of freshwater from extremely hot and humid air116US 6,684,648 B2Fakieh Research & Development Center · 2004
- Production of potable water and freshwater needs for human, animal and plants from hot and humid air105US 6,574,979 B2Fakieh Research & Development · 2003
- Portable, potable water recovery and dispensing apparatus79US 5,669,221 AWorldwide Water, Inc. · 1997
- Portable/potable water recovery and dispensing apparatus71US 5,845,504 AWorldwide Water, Inc. · 1998