B01D 21/20
Driving mechanisms
B01D21/20 (Driving mechanisms) appears on 84 US grants and 41 published applications in this corpus.
Search patents in B01D- Granted patents
- 84
- Published applications
- 41
- Assignees
- 51
- Inventors
- 121
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 6 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 1 |
| 2002 | 4 | 0 |
| 2003 | 2 | 3 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 2 | 0 |
| 2011 | 1 | 3 |
| 2012 | 1 | 1 |
| 2013 | 0 | 3 |
| 2014 | 1 | 1 |
| 2015 | 2 | 4 |
| 2016 | 2 | 1 |
| 2017 | 4 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 6 |
| 2021 | 6 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 4 |
| 2025 | 2 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Roller for chain and scraper assembly3 Feb 2026US 12,539,473 B2Evoqua Water Technologies LLC
- Bearing wear monitoring device for circular clarifier drive5 Aug 2025US 12,378,993 B2Evoqua Water Technologies LLC
- Large-flux ultra-fine grid system with non-rotating screen plates28 Jan 2025US 12,208,345 B2North China Municipal Engineering Design & Research Institute Co., Ltd.
- Clarifier with independent sump scraper drive16 May 2023US 11,648,493 B2Kadant Black Clawson LLC
- Clarifier with independent sump scraper drive19 Oct 2021US 11,148,074 B2Kadant Black Clawson LLC
- System for cleaning equipment intended to be placed in a solid/liquid separation settler, and associated installation and method1 Oct 2026US 2026/0295472 A1Suez International
- Sludge treatment device18 Jun 2026US 2026/0166591 A1Suido Kiko Kaisha, Ltd.
- Non-metallic conveyor chain having improved durability, and sludge removal facility including same24 Jul 2025US 2025/0236467 A1Linkon Technology Co., Ltd.
- Large-flux Ultra-fine Grid System with Non-rotating Screen Plates21 Nov 2024US 2024/0382874 A1North China Municipal Engineering Design & Research Institute Co., Ltd.
- Roller for chain and scraper assembly11 Jul 2024US 2024/0226774 A9Evoqua Water Technolgoies LLC
Most cited
By later US patents
- Device for separating a blood component from blood or plasma94US 5,738,784 AE. R. Squibb & Sons, Inc. · 1998
- Centrifuge tube and adaptor71US 5,422,018 AApplied Imaging Corporation · 1995
- Sediment collecting device46US 4,401,576 AMeurer Industries, Inc. · 1983
- Method and device for separating a component such as fibrin I from blood plasma31US 5,824,230 AE. R. Squibb & Sons, Inc. · 1998
- Liquid separator25US 5,626,748 A1997