B01D 35/34
Open-topped
Official title: open-topped (B01D35/31 takes precedence)
B01D35/34 (Open-topped) appears on 26 US grants and 33 published applications in this corpus.
Search patents in B01D- Granted patents
- 26
- Published applications
- 33
- Assignees
- 20
- Inventors
- 43
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 3 |
| 2015 | 0 | 3 |
| 2016 | 2 | 1 |
| 2017 | 4 | 3 |
| 2018 | 0 | 0 |
| 2019 | 3 | 3 |
| 2020 | 1 | 2 |
| 2021 | 3 | 4 |
| 2022 | 2 | 6 |
| 2023 | 2 | 2 |
| 2024 | 3 | 2 |
| 2025 | 2 | 0 |
| 2026 | 1 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Water purifier12 May 2026US 12,623,920 B2Coway Co., Ltd.
- Filter apparatus with vented core18 Nov 2025US 12,472,450 B2Entegris, Inc.
- Water purifying apparatus and refrigerator including the same1 Apr 2025US 12,263,425 B2LG Electronics Inc.
- Filter assembly16 Jul 2024US 12,036,494 B2MANN+HUMMEL Filtration Technology US LLC
- Filter apparatus with vented core11 Jun 2024US 12,005,379 B2Entegris, Inc.
- Portable microplastic filter stand9 Apr 2026US 2026/0097338 A1
- Filter apparatus with vented core5 Sep 2024US 2024/0293764 A1Entegris, Inc.
- Water purifier29 Feb 2024US 2024/0067535 A1Coway Co., Ltd.
- Filter Assembly23 Nov 2023US 2023/0372846 A1MANN+HUMMEL Filtration Technology US LLC
- Hydrocarbon absorbing filter26 Oct 2023US 2023/0338876 A1
Most cited
By later US patents
- Liquid filter arrangement; components; and methods15US 7,628,280 B2Donaldson Company, Inc. · 2009
- Filter device9US 10,343,099 B2Mahle International GmbH · 2019
- Refrigerator9US 9,651,296 B2Samsung Electronics Co., Ltd. · 2017
- Liquid filter arrangement; components; and, methods8US 8,535,530 B2Donaldson Company, Inc. · 2013
- Manifold arrangement5US 10,391,432 B2Evoqua Water Technologies LLC · 2019