B01D 2323/15
Use of additives
B01D2323/15 (Use of additives) appears on 548 US grants and 842 published applications in this corpus.
Search patents in B01D- Granted patents
- 548
- Published applications
- 842
- Assignees
- 452
- Inventors
- 2,137
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 8 | 0 |
| 1994 | 5 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 7 |
| 2003 | 5 | 10 |
| 2004 | 3 | 10 |
| 2005 | 7 | 12 |
| 2006 | 5 | 14 |
| 2007 | 5 | 22 |
| 2008 | 11 | 16 |
| 2009 | 11 | 19 |
| 2010 | 10 | 10 |
| 2011 | 14 | 17 |
| 2012 | 9 | 11 |
| 2013 | 6 | 14 |
| 2014 | 9 | 26 |
| 2015 | 16 | 40 |
| 2016 | 24 | 44 |
| 2017 | 25 | 54 |
| 2018 | 31 | 41 |
| 2019 | 41 | 60 |
| 2020 | 40 | 66 |
| 2021 | 33 | 49 |
| 2022 | 35 | 40 |
| 2023 | 25 | 72 |
| 2024 | 40 | 63 |
| 2025 | 50 | 76 |
| 2026 | 24 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2323/218Additive materialsIndexing code256
- B01D 2323/18Pore-control agents or pore formersIndexing code134
- B01D 2323/21FillersIndexing code80
- B01D 2323/20PlasticizersIndexing code61
- B01D 2323/16Swelling agentsIndexing code52
- B01D 2323/216SurfactantsIndexing code23
- B01D 2323/217Emulgator or emulsion/foam forming agentsIndexing code13
Recent patents
- Membrane permeate recycle with pressurized anaerobic digesters15 Sep 2026US 12,734,475 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Oil-water separation systems and methods of separating aqueous emulsions15 Sep 2026US 12,734,486 B2Aculon, Inc.
- Surface-treated porous materials having filtration properties and methods of preparing them18 Aug 2026US 12,708,879 B2Aculon, Inc.
- Flat sheet membrane filtration module with cylindrical housing28 Jul 2026US 12,691,416 B2Thetis Environmental Inc.
- Method for producing a gas separation membrane28 Jul 2026US 12,691,417 B2Kerionics, S.L.
- Ion exchange membrane8 Oct 2026US 2026/0307020 A1Khalifa University of Science and Technology
- Conductive hollow fiber membrane and preparation method thereof and membrane assembly24 Sep 2026US 2026/0284601 A1Cangzhou Institute of Tiangong University
- Conductive base membrane and preparation method thereof24 Sep 2026US 2026/0284606 A1Beijing Baoshengtong International Electrical Engineering Technology Co., Ltd.
- Hollow fiber and a process for preparation thereof10 Sep 2026US 2026/0264024 A1
- Purification process of ethyl formate27 Aug 2026US 2026/0249251 A1Taicang Hushi Reagent Co., Ltd.
Most cited
By later US patents
- Method of making polytetrafluoroethylene composite sheet203US 4,153,661 AMinnesota Mining and Manufacturing Company · 1979
- Preparation of a polymeric hydrogel containing micropores and macropores for use as a cell culture substrate134US 5,244,799 A1993
- Solid gel membrane separator in rechargeable electrochemical cells105US 6,358,651 B1Reveo, Inc. · 2002
- Continuous open-cell polymeric foams containing living cells101US 5,677,355 ASmith & Nephew, Inc. · 1997
- Microporous polymeric films and process for their manufacture99US 4,698,372 AE. I. Du Pont de Nemours and Company · 1987