C12M 25/20
Fluidized bed
Official title: {Fluidized bed (in chemical or physical processes B01J8/18)}
C12M25/20 (Fluidized bed) appears on 61 US grants and 53 published applications in this corpus.
Search patents in C12M- Granted patents
- 61
- Published applications
- 53
- Assignees
- 62
- Inventors
- 174
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 3 |
| 2010 | 0 | 3 |
| 2011 | 0 | 5 |
| 2012 | 0 | 2 |
| 2013 | 3 | 3 |
| 2014 | 2 | 3 |
| 2015 | 3 | 4 |
| 2016 | 1 | 2 |
| 2017 | 1 | 4 |
| 2018 | 2 | 1 |
| 2019 | 4 | 3 |
| 2020 | 1 | 1 |
| 2021 | 0 | 5 |
| 2022 | 0 | 0 |
| 2023 | 2 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 4 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and systems for cell bed formation during bioprocessing23 Dec 2025US 12,503,680 B2ImmunityBio, Inc.
- Moving bed biofilm reactor system for production of algae biomass17 Sep 2024US 12,091,647 B2Kimle Aquaculture, LLC
- Gas fermentation using multiple-pass trickle bed reactors30 Jan 2024US 11,884,904 B2ICM, Inc.
- Respirator, measurement device and measuring method for measuring respiratory rate of biofilm5 Dec 2023US 11,834,645 B2Jinan University
- Water treatment27 Jun 2023US 11,685,674 B2Veolia Water Solutions & Technologies Support
- Apparatus8 Oct 2026US 2026/0308512 A1
- Methods and systems for cell bed formation during bioprocessing12 Mar 2026US 2026/0071165 A1ImmunityBio, Inc.
- Circulating bioreactor with bubble trap29 May 2025US 2025/0171724 A1
- Wireless sensors for monitoring and controlling circulating bioreactor29 May 2025US 2025/0171727 A1
- Method for operating a clarification setup20 Feb 2025US 2025/0059490 A1Sartorius Stedim North America Inc.
Most cited
By later US patents
- Fluidized cell cultivation process77US 4,978,616 AVerax Corporation · 1990
- Method for wastewater treatment in fluidized bed biological reactors45US 4,322,296 AKansas State Univ. Research Foundation · 1982
- Flow distributor for fluid bed biological reactor39US 4,202,774 ADorr-Oliver Incorporated · 1980
- Waste treatment process36US 4,182,675 AEcolotrol, Inc. · 1980
- Methane production by attached film34US 4,284,508 A1981