B01D 69/1218
Layers having the same chemical composition, but different properties
Official title: {Layers having the same chemical composition, but different properties, e.g. pore size, molecular weight or porosity}
B01D69/1218 (Layers having the same chemical composition, but different properties) appears on 105 US grants and 131 published applications in this corpus.
Search patents in B01D- Granted patents
- 105
- Published applications
- 131
- Assignees
- 103
- Inventors
- 406
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 3 |
| 2004 | 2 | 4 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 6 |
| 2008 | 1 | 0 |
| 2009 | 2 | 2 |
| 2010 | 0 | 4 |
| 2011 | 3 | 4 |
| 2012 | 2 | 2 |
| 2013 | 0 | 2 |
| 2014 | 2 | 3 |
| 2015 | 0 | 4 |
| 2016 | 2 | 6 |
| 2017 | 8 | 19 |
| 2018 | 6 | 13 |
| 2019 | 8 | 6 |
| 2020 | 13 | 13 |
| 2021 | 8 | 6 |
| 2022 | 7 | 4 |
| 2023 | 6 | 13 |
| 2024 | 4 | 4 |
| 2025 | 5 | 3 |
| 2026 | 1 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation method of organosilica/ceramic composite membrane with a gradient pore structure10 Feb 2026US 12,544,721 B2Changzhou University
- Electrochemical water deionization separators23 Dec 2025US 12,503,380 B2Robert Bosch GmbH
- Gas separation method and zeolite membrane4 Nov 2025US 12,458,949 B2NGK Insulators, Ltd.
- Microfiltration membrane21 Oct 2025US 12,447,442 B2EMD Millipore Corporation
- Composite body and use thereof in organophilic nanofiltration26 Aug 2025US 12,397,267 B2Evonik Operations GmbH
- Porous ceramic layer, porous ceramic layered body and separation membrane30 Jul 2026US 2026/0216665 A1Sumitomo Chemical Company, Limited
- Porous ceramic layer, porous ceramic layered body and separation membrane30 Jul 2026US 2026/0216666 A1Sumitomo Chemical Company, Limited
- Mxene membrane with gradient pores, preparation method and application thereof23 Jul 2026US 2026/0208121 A1South China University of Technology
- A method for preparing supported mof membranes induced by low-crystal aggregated state structures, mof membranes and their applications30 Apr 2026US 2026/0115670 A1Nanjing Tech University
- Polyolefin filtration membrane and preparation method therefor30 Apr 2026US 2026/0115672 A1Hangzhou Cobetter Filtration Equipment Co., Ltd.
Most cited
By later US patents
- Membrane filter and a method of manufacturing the same as well as a membrane218US 5,753,014 A1998
- Filter for liquor filtration87US 5,462,667 APall Corporation · 1995
- Ion transport membranes with catalyzed mixed conducting porous layer73US 5,534,471 AAir Products and Chemicals, Inc. · 1996
- Method of separating cells from blood using a filter having a changeable porosity73US 6,139,757 ATerumo Kabushiki Kaisha · 2000
- Multi-layer filter58US 4,483,771 A1984