B01D 33/39
Concentrically or coaxially
Official title: concentrically or coaxially
B01D33/39 (Concentrically or coaxially) appears on 86 US grants and 35 published applications in this corpus.
Search patents in B01D- Granted patents
- 86
- Published applications
- 35
- Assignees
- 53
- Inventors
- 143
- Latest grant
- 30 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 1 |
| 2003 | 5 | 2 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 4 |
| 2007 | 0 | 2 |
| 2008 | 1 | 2 |
| 2009 | 3 | 2 |
| 2010 | 1 | 2 |
| 2011 | 2 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 1 |
| 2014 | 2 | 1 |
| 2015 | 2 | 2 |
| 2016 | 2 | 0 |
| 2017 | 0 | 3 |
| 2018 | 0 | 0 |
| 2019 | 2 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Disc filter pre-screen dual media disc filter30 Jul 2024US 12,048,890 B2Evoqua Water Technologies LLC
- Kind of an integrated sewage treatment equipment for paper mill22 Nov 2022US 11,504,652 B2Zhengzhou University of Aeronautics
- Water filter4 May 2021US 10,994,231 B2Filter Art Ltd.
- Disc filter pre-screen dual media disc filter12 Jan 2021US 10,888,807 B2Evoqua Water Technologies LLC
- Filtering device14 Jan 2020US 10,532,300 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Filter bag and filter module for a rotary disk filter and rotary disk filter2 Apr 2026US 2026/0091330 A1
- Filter bag and filter module for a rotary disk filter and rotary disk filter9 Nov 2023US 2023/0356120 A1
- Disc filter pre-screen dual media disc filter26 Oct 2023US 2023/0338880 A1Evoqua Water Technologies LLC
- Disc filter pre-screen dual media disc filter6 May 2021US 2021/0129059 A1Evoqua Water Technologies LLC
- Kind of an integrated sewage treatment equipment for paper mill29 Apr 2021US 2021/0121798 A1Zhengzhou University of Aeronautics
Most cited
By later US patents
- Rotary filtration device and filter pack therefor74US 5,254,250 AMembrex, Inc. · 1993
- Rotary disc filtration device73US 5,143,630 AMembrex, Inc. · 1992
- Screw press38US 6,634,508 B1Ishigaki Company Limited · 2003
- Centrifuge with partial wear resistant basket33US 6,267,250 B1Baker Hughes Incorporated · 2001
- Filtering machine for fibrous substances having revolving cone-shaded filters32US 5,087,358 A1992