B01D 2321/166
Use of enzymatic agents
B01D2321/166 (Use of enzymatic agents) appears on 17 US grants and 22 published applications in this corpus.
Search patents in B01D- Granted patents
- 17
- Published applications
- 22
- Assignees
- 22
- Inventors
- 79
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 4 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 0 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Chemical product comprising an anionic surfactant, chelant, and enzyme, and process for cleaning nanofiltration and reverse osmosis membranes7 Apr 2026US 12,595,436 B2Petroleo Brasileiro S.A. - Petrobras
- Nanobiocatalyst and nanobiocatalytic membrane23 Jan 2024US 11,878,276 B2University of Vermont and State Agricultural College
- Membrane cleaning solution and method of accelerated membrane cleaning using the same20 Dec 2022US 11,529,588 B2Diversey, Inc.
- Nanobiocatalyst and nanobiocatalytic membrane8 Mar 2022US 11,266,955 B2University of Vermont and State Agricultural College
- Cleaning of water filtration membranes9 Jun 2020US 10,675,589 B2Novozymes A/S
- System and methods for mimicking membrane cleaning-in-place conditions9 Apr 2026US 2026/0097368 A1Ecolab USA Inc.
- Adaptive cleaning-in-place method for a membrane filtration system28 Aug 2025US 2025/0269330 A1
- Low toxicity surfactant booster compositions for filtration membrane cleaning applications12 Jun 2025US 2025/0188387 A1Ecolab USA Inc.
- In-situ repair method for the surface of pa membrane after the destruction of oxidizing substances5 Jun 2025US 2025/0177924 A1Northwestern Polytechnical University
- Multi-step methods of cleaning dairy membranes3 Oct 2024US 2024/0327759 A1Ecolab USA Inc.
Most cited
By later US patents
- Surface-cleaning method67US 6,387,189 B1Bayer Aktiengesellschaft · 2002
- Liquid cleaning composition containing stabilized enzymes45US 4,169,817 AMidwest Biochemical Corporation · 1979
- Precoat for permeability separation systems31US 3,996,131 AUniversal Oil Products Company · 1976
- Cleaning-in-place with a solution containing a protease and a lipase31US 6,071,356 ANovo Nordisk Als · 2000
- Biofilm reduction in crossflow filtration systems25US 7,165,561 B2Advanced BioCatalytics Corporation · 2007