B01D 35/1475
Pressure relief valves or pressure control valves
Official title: {Pressure relief valves or pressure control valves}
B01D35/1475 (Pressure relief valves or pressure control valves) appears on 97 US grants and 140 published applications in this corpus.
Search patents in B01D- Granted patents
- 97
- Published applications
- 140
- Assignees
- 90
- Inventors
- 242
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 4 |
| 2012 | 2 | 2 |
| 2013 | 0 | 4 |
| 2014 | 2 | 7 |
| 2015 | 3 | 7 |
| 2016 | 3 | 7 |
| 2017 | 8 | 8 |
| 2018 | 4 | 13 |
| 2019 | 9 | 11 |
| 2020 | 10 | 12 |
| 2021 | 11 | 17 |
| 2022 | 8 | 8 |
| 2023 | 13 | 7 |
| 2024 | 9 | 12 |
| 2025 | 3 | 5 |
| 2026 | 10 | 11 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Shower system with a filter6 Oct 2026US 12,753,092 B2
- Filtering shower assembly system8 Sep 2026US 12,729,137 B2
- Pure water systems25 Aug 2026US 12,715,790 B2Unger Marketing International, LLC
- Filter valve assembly18 Aug 2026US 12,708,868 B2Hamilton Sundstrand Corporation
- Impending bypass indicator11 Aug 2026US 12,702,945 B2Pratt & Whitney Canada Corp.
- Filter device with burst-proof function11 Jun 2026US 2026/0158424 A1PA.E Machinery Industrial Co., Ltd.
- Impending bypass indicator4 Jun 2026US 2026/0151720 A1Pratt & Whitney Canada Corp.
- Filter arrangement for cleaning hydraulic oil9 Apr 2026US 2026/0097335 A1Deere & Company
- Tool-free water filter2 Apr 2026US 2026/0091332 A1Kemflo International Co., Ltd.
- Filter for hydraulic fluids for hydraulic circuits19 Mar 2026US 2026/0077281 A1Mp Filtri S.P.A.
Most cited
By later US patents
- Filter assembly with locking cover12US 10,414,671 B2Unger Marketing International, LLC · 2019
- Oil filter10US 8,187,458 B2Lifetime Oil Filter, Inc. · 2012
- Media purification devices having integral flow controllers8US 10,829,396 B2Unger Marketing International, LLC · 2020
- Induction heating module and water purifier having the same7US 10,267,535 B2LG Electronics Inc. · 2019
- Portable lubricant filtration system and method7US 8,147,683 B2Trico Corporation · 2012