B01D 2313/14
Specific spacers
B01D2313/14 (Specific spacers) appears on 434 US grants and 574 published applications in this corpus.
Search patents in B01D- Granted patents
- 434
- Published applications
- 574
- Assignees
- 320
- Inventors
- 1,287
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 1 |
| 2002 | 1 | 4 |
| 2003 | 7 | 7 |
| 2004 | 2 | 11 |
| 2005 | 3 | 13 |
| 2006 | 4 | 6 |
| 2007 | 5 | 14 |
| 2008 | 7 | 15 |
| 2009 | 4 | 10 |
| 2010 | 8 | 13 |
| 2011 | 5 | 14 |
| 2012 | 10 | 22 |
| 2013 | 14 | 20 |
| 2014 | 7 | 21 |
| 2015 | 9 | 36 |
| 2016 | 14 | 29 |
| 2017 | 21 | 24 |
| 2018 | 21 | 30 |
| 2019 | 25 | 51 |
| 2020 | 25 | 39 |
| 2021 | 25 | 38 |
| 2022 | 30 | 40 |
| 2023 | 32 | 36 |
| 2024 | 26 | 44 |
| 2025 | 24 | 22 |
| 2026 | 21 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Humidifying device having channel plates and channel plate for humidifying device25 Aug 2026US 12,719,067 B2Mann+Hummel GmbH
- Composite semipermeable membrane, spiral membrane element, water treatment system, and water treatment method18 Aug 2026US 12,708,880 B2Nitto Denko Corporation
- Formed sheet membrane element and filtration system4 Aug 2026US 12,697,586 B2Fibracast Ltd.
- Flat sheet membrane filtration module with cylindrical housing28 Jul 2026US 12,691,416 B2Thetis Environmental Inc.
- Metal ion recovery device, metal recovery system, and metal ion recovery method7 Jul 2026US 12,673,295 B2National Institutes for Quantum Science and Technology
- A filtration module and a method of installing a filtration module24 Sep 2026US 2026/0284599 A1Alfa Laval Corporate AB
- Compact spiral-wound filter elements, modules and systems24 Sep 2026US 2026/0284600 A1EMD Millipore Corporation
- Membrane Dialysis Device23 Jul 2026US 2026/0208111 A1AT&S Austria Technologie & Systemtechnik Aktiengesellschaft
- Spiral Wound Reverse Osmosis Membrane Element and Water Purifier with Spiral Wound Reverse Osmosis Membrane Element9 Jul 2026US 2026/0192256 A1Gree Electric Appliances, Inc. of Zhuhai
- Variable Velocity Patterns in Cross-Flow Filtration25 Jun 2026US 2026/0175177 A1Aqua Membranes Inc.
Most cited
By later US patents
- Peritoneal dialysis system using reverse osmosis purification device260US 5,498,338 AAbbott Laboratories · 1996
- Composite hydrogen separation element and module164US 5,645,626 ABend Research, Inc. · 1997
- Membrane filtration device having a hygienic suspension arrangement125US 9,776,138 B2Tetra Laval Holdings & Finance S. A. · 2017
- Membrane module for gas transfer and membrane supported biofilm process99US 6,645,374 B2Zenon Environmental Inc. · 2003
- Apparatus and method for cleaning membrane filtration modules98US 6,524,481 B2U. S. Filter Wastewater Group, Inc. · 2003