B03C 3/32
Transportable units
Official title: Transportable units, e.g. for cleaning room air
B03C3/32 (Transportable units) appears on 208 US grants and 227 published applications in this corpus.
Search patents in B03C- Granted patents
- 208
- Published applications
- 227
- Assignees
- 139
- Inventors
- 465
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 3 |
| 2002 | 6 | 6 |
| 2003 | 3 | 6 |
| 2004 | 7 | 23 |
| 2005 | 15 | 16 |
| 2006 | 5 | 28 |
| 2007 | 15 | 11 |
| 2008 | 11 | 12 |
| 2009 | 4 | 7 |
| 2010 | 9 | 7 |
| 2011 | 7 | 6 |
| 2012 | 4 | 2 |
| 2013 | 5 | 7 |
| 2014 | 2 | 1 |
| 2015 | 2 | 9 |
| 2016 | 5 | 7 |
| 2017 | 5 | 4 |
| 2018 | 5 | 7 |
| 2019 | 4 | 5 |
| 2020 | 3 | 3 |
| 2021 | 8 | 13 |
| 2022 | 2 | 10 |
| 2023 | 2 | 12 |
| 2024 | 15 | 13 |
| 2025 | 6 | 7 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dust collection sheet and electrostatic precipitator18 Aug 2026US 12,708,911 B2Samsung Electronics Co., Ltd.
- Particulate collecting device17 Mar 2026US 12,576,409 B2The Tyre Collective Ltd
- Dust collecting filter2 Dec 2025US 12,485,429 B2LG Electronics Inc.
- Supervisory control and pathogen-destroying electrostatic precipitator system2 Dec 2025US 12,485,430 B2Agentis Air LLC
- Airborne virus protection and disinfection device and method of manufacturing19 Aug 2025US 12,390,549 B2American International Radio, Inc.
- Ionic Personal Exhalant Filter30 Jul 2026US 2026/0215495 A1Philter Labs, Inc.
- Electronically enhanced air cleaner with multiple filters and energy grids12 Mar 2026US 2026/0070067 A1Healthway Home Products Company Inc.
- Electro-ionic mask devices for improved protection from airborne biopathogens9 Oct 2025US 2025/0312802 A1
- Electric dust collection device, and charging device included in electric dust collection device10 Jul 2025US 2025/0222466 A1Samsung Electronics Co., Ltd.
- Air filter unit and use of the air filter unit in a motor vehicle19 Jun 2025US 2025/0196158 A1Mahle International GmbH
Most cited
By later US patents
- Miniature air purifier126US 5,484,472 A1996
- Electro-kinetic air transporter-conditioner122US 6,176,977 B1Sharper Image Corporation · 2001
- Portable personal corona discharge device for destruction of airborne microbes and chemical toxins111US 5,667,564 AWein Products, Inc. · 1997
- Electro-kinetic air refreshener-conditioner with optional night light103US 6,163,098 ASharper Image Corporation · 2000
- Electrode self-cleaning mechanism for electro-kinetic air transporter-conditioner devices102US 6,350,417 B1Sharper Image Corporation · 2002