B03C 3/49
Tubular
Official title: tubular
B03C3/49 (Tubular) appears on 234 US grants and 343 published applications in this corpus.
Search patents in B03C- Granted patents
- 234
- Published applications
- 343
- Assignees
- 220
- Inventors
- 611
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 4 |
| 2004 | 4 | 7 |
| 2005 | 5 | 10 |
| 2006 | 6 | 14 |
| 2007 | 4 | 16 |
| 2008 | 8 | 8 |
| 2009 | 11 | 11 |
| 2010 | 6 | 16 |
| 2011 | 5 | 11 |
| 2012 | 14 | 14 |
| 2013 | 11 | 14 |
| 2014 | 12 | 10 |
| 2015 | 6 | 10 |
| 2016 | 8 | 15 |
| 2017 | 7 | 9 |
| 2018 | 9 | 21 |
| 2019 | 9 | 16 |
| 2020 | 16 | 12 |
| 2021 | 10 | 37 |
| 2022 | 9 | 35 |
| 2023 | 9 | 20 |
| 2024 | 12 | 14 |
| 2025 | 14 | 11 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System comprising a discharge electrode assembly and an electrostatic precipitator unit comprising such a system23 Jun 2026US 12,661,662 B2exodraft a/s
- Electrostatic precipitator with rotary collecting walls2 Jun 2026US 12,643,112 B2Nestec S. A.
- Gravel circulation dry electrostatic precipitator26 May 2026US 12,636,660 B2Metro Engineering Co., Ltd.
- Packed-bed filter for metal fluoride dust trapping in laser discharge chambers7 Apr 2026US 12,597,753 B2Cymer, Inc.
- Particulate collecting device17 Mar 2026US 12,576,409 B2The Tyre Collective Ltd
- Electrostatic precipitator with rotary collecting walls24 Sep 2026US 2026/0284675 A1Nestec S.A.
- Devices and methods to reduce air pollution and global warming23 Jul 2026US 2026/0208207 A1Temple University of the Commonwealth System of Higher Education
- High-voltage electrostatic type air purification module and ionic wind air purifier18 Jun 2026US 2026/0166565 A1Guangdong Tongyuan Electric Appliance Co., Ltd
- Removable modular ionization tubes for electrostatic precipitators4 Jun 2026US 2026/0151779 A1AirVitalize Innovations, Incorporated
- Catalyst treatment apparatus using plasma and exhaust gas treatment system using the same30 Apr 2026US 2026/0115661 A1Ennopia
Most cited
By later US patents
- Electrostatic air treatment and movement system97US 5,024,685 AAstra-Vent AB · 1991
- Device for air cleaning70US 6,203,600 B1Eurus Airtech AB · 2001
- Wet electrostatic ionizing element and cooperating honeycomb passage ways68US 5,254,155 A1993
- Method and apparatus for moving, filtering and ionizing air62US 6,228,149 B1Patterson Technique, Inc. · 2001
- Device for air cleaning52US 6,398,852 B1Eurus Airtech AB · 2002