B01D 37/00
Processes of filtration
Official title: Processes of filtration (processes specially adapted for filtering gases B01D46/00)
B01D37/00 (Processes of filtration) appears on 1,258 US grants and 927 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,258
- Published applications
- 927
- Assignees
- 855
- Inventors
- 2,745
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 25 | 0 |
| 1978 | 17 | 0 |
| 1979 | 26 | 0 |
| 1980 | 28 | 0 |
| 1981 | 35 | 0 |
| 1982 | 24 | 0 |
| 1983 | 24 | 0 |
| 1984 | 24 | 0 |
| 1985 | 24 | 0 |
| 1986 | 24 | 0 |
| 1987 | 20 | 0 |
| 1988 | 26 | 0 |
| 1989 | 22 | 0 |
| 1990 | 25 | 0 |
| 1991 | 26 | 0 |
| 1992 | 33 | 0 |
| 1993 | 31 | 0 |
| 1994 | 25 | 0 |
| 1995 | 19 | 0 |
| 1996 | 21 | 0 |
| 1997 | 29 | 0 |
| 1998 | 21 | 0 |
| 1999 | 12 | 0 |
| 2000 | 17 | 0 |
| 2001 | 21 | 9 |
| 2002 | 15 | 26 |
| 2003 | 27 | 37 |
| 2004 | 20 | 26 |
| 2005 | 26 | 31 |
| 2006 | 19 | 20 |
| 2007 | 16 | 17 |
| 2008 | 12 | 24 |
| 2009 | 10 | 19 |
| 2010 | 11 | 15 |
| 2011 | 21 | 21 |
| 2012 | 12 | 21 |
| 2013 | 11 | 36 |
| 2014 | 16 | 37 |
| 2015 | 23 | 38 |
| 2016 | 18 | 37 |
| 2017 | 28 | 43 |
| 2018 | 26 | 39 |
| 2019 | 41 | 55 |
| 2020 | 42 | 62 |
| 2021 | 50 | 53 |
| 2022 | 40 | 64 |
| 2023 | 43 | 54 |
| 2024 | 35 | 54 |
| 2025 | 48 | 56 |
| 2026 | 26 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of filtrating liquid, and filtration apparatus for filtrating liquid25 Aug 2026US 12,714,956 B2Renasys AS
- Filtration unit and a method for biomaterial purification18 Aug 2026US 12,709,631 B2Life Technologies Corporation
- Method for purifying liquid and system for the implementation thereof11 Aug 2026US 12,702,952 B2Electrophor, Inc.
- Well plug debris capturing system28 Jul 2026US 12,692,757 B1Bandit Services, LLC
- Method of supplying potable water to a recreation vehicle14 Jul 2026US 12,678,722 B1Camco Manufacturing, Inc.
- Method of filtration of particulated systems with injection of nanobubbles, and, use8 Oct 2026US 2026/0306978 A1Universidade Federal Do Rio Grande Do Sul—Ufrgs
- Filtration apparatus and method of controlling filtration apparatus1 Oct 2026US 2026/0295479 A1Renasys AS
- Devices, systems, and methods, for integrating of a fluid service assembly into a machine1 Oct 2026US 2026/0295482 A1Rpm Industries, LLC
- Loss-free process for producing cathode active material without generating waste and wastewater24 Sep 2026US 2026/0285703 A1
- System and method for separation of organics and liquids from waste material17 Sep 2026US 2026/0273598 A1Komar Industries, Inc.
Most cited
By later US patents
- Nanofiber filter media194US 6,872,311 B2Koslow Technologies Corporation · 2005
- Fibrous structures containing immobilized particulate matter181US 5,486,410 AHoechst Celanese Corporation · 1996
- Personal water filter bottle system161US 6,569,329 B1Innova Pure Water Inc. · 2003
- Electronic monitoring unit for monitoring number of uses of cartridge155US 5,328,597 AThe Clorox Company · 1994
- Masking elements for dissolving oil improving body in an oil filter146US 4,075,098 AMonroe Auto Equipment Company · 1978