B01D 47/04
Separating dispersed particles from gases, air or vapours by liquid as separating
Official title: by passing the gas or air or vapour through foam
B01D47/04 (Separating dispersed particles from gases, air or vapours by liquid as separating) appears on 24 US grants and 13 published applications in this corpus.
Search patents in B01D- Granted patents
- 24
- Published applications
- 13
- Assignees
- 12
- Inventors
- 39
- Latest grant
- 24 Nov 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 2 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method of removing impurities24 Nov 2020US 10,843,115 B2Chiyoda Corporation
- Composition, device, and method for biological air sampling12 Mar 2019US 10,227,631 B2
- Gas purification agent and method of using the same21 Nov 2017US 9,821,271 B2
- Composition, device, and method for biological air sampling27 Oct 2015US 9,170,178 B2
- Method and apparatus for multi-stage air treatment system6 Mar 2012US 8,128,742 B1
- Air purifier29 May 2025US 2025/0170515 A1Samsung Electronics Co., Ltd.
- Method of removing impurities20 Jun 2019US 2019/0184325 A1Chiyoda Corporation
- Process for making solid particles8 Mar 2018US 2018/0065073 A1The Procter & Gamble Company
- Gas purification agent and method of using the same18 Aug 2016US 2016/0236143 A1
- Composition, Device, and Method for Biological Air Sampling4 Feb 2016US 2016/0032352 A1
Most cited
By later US patents
- Method and means for filtering an air stream with an aqueous froth43US 6,616,733 B1Peletex, Inc. · 2003
- Method for reducing the amount of coal dust in the environment surrounding coal mining37US 4,380,459 AAtlantic Richfield Company · 1983
- Mass-transfer apparatus25US 4,820,456 AUkrainsky Nauchno-Issledovatelsky Institut Prirodnykh Gazov "Ukrniigaz" · 1989
- Foam scrubber and method14US 4,003,724 AThe Anaconda Company · 1977
- Method and apparatus for filtering an air stream using an aqueous-froth together with nucleation14US 6,872,240 B2Peletex, Inc. · 2005