B01D 47/12
Washers with plural different washing sections
Official title: Washers with plural different washing sections (B01D47/14 takes precedence)
B01D47/12 (Washers with plural different washing sections) appears on 111 US grants and 53 published applications in this corpus.
Search patents in B01D- Granted patents
- 111
- Published applications
- 53
- Assignees
- 83
- Inventors
- 260
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 2 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 2 | 4 |
| 2020 | 4 | 6 |
| 2021 | 2 | 6 |
| 2022 | 8 | 7 |
| 2023 | 5 | 6 |
| 2024 | 3 | 2 |
| 2025 | 2 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Waste gas treatment apparatus for semiconductor and display processes14 Apr 2026US 12,604,697 B2
- Systems and methods of using a cooling system in a carbon capture process25 Nov 2025US 12,478,913 B1Schlumberger Technology Corporation
- Method of treating a gas stream and method of operating an apparatus for producing a three-dimensional work piece13 May 2025US 12,296,388 B2Nikon SLM Solutions AG
- Foreign substance collecting apparatus and electrical steel sheet manufacturing facility including same12 Nov 2024US 12,138,709 B2Posco
- Apparatus and method for particulate capture from gas streams and a method of removing soluble particulate from a gas10 Sep 2024US 12,083,468 B2Stamicarbon B. V.
- Gas abatement apparatus and gas treatment method9 Apr 2026US 2026/0097361 A1Kanken Techno Co., Ltd.
- Method of treating a gas stream and method of operating an apparatus for producing a three-dimensional work piece24 Jul 2025US 2025/0235931 A1Nikon SLM Solutions AG
- System for scrubbing exhaust emissions19 Jun 2025US 2025/0196046 A1
- Self cleaning scrubber for silicon wafer cutting processes1 May 2025US 2025/0135389 A1
- Air purifier using watering17 Apr 2025US 2025/0121324 A1
Most cited
By later US patents
- Venturi scrubber and process71US 5,279,646 AProcess and Control Technology Corporation · 1994
- Venturi scrubber and method of using the same55US 5,759,233 AEnviroCare International, Inc. · 1998
- Apparatus for scrubbing of hydrocarbons from gas48US 4,028,072 AAluminium Norf GmbH · 1977
- Heating, ventilation and air conditioning unit with automatically controlled water spray air purification system48US 5,389,120 A1995
- High temperature pollutant removal from gas streams46US 4,308,037 AInstitute of Gas Technology · 1981