B01D 2275/406
Rigid blocks
B01D2275/406 (Rigid blocks) appears on 9 US grants and 12 published applications in this corpus.
Search patents in B01D- Granted patents
- 9
- Published applications
- 12
- Assignees
- 7
- Inventors
- 32
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 4 |
| 2018 | 1 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 2 |
| 2024 | 2 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter unit with a filter block, a damping layer and a housing, and process of manufacturing such a filter unit6 Oct 2026US 12,752,136 B2Dräger Safety AG & Co. KGaA
- Gasket and frame assembly for air filter10 Dec 2024US 12,161,962 B2Baldwin Filters, Inc.
- Pressure and heat molded polymer tube with interlocking grommet15 Oct 2024US 12,115,473 B2Bulk Tank, Inc.
- Break filter using a silicon carbide porous body and manufacturing method of the break filter13 Apr 2021US 10,974,183 B2CoorsTek, Inc.
- Plugged honeycomb structure and method for forming plugged honeycomb structure25 Aug 2020US 10,753,244 B2NGK Insulators, Ltd.
- Gasket and frame assembly for air filter13 Feb 2025US 2025/0050261 A1Baldwin Filters, Inc.
- Filter unit with a filter block, a damping layer and a housing, and process of manufacturing such a filter unit13 Jul 2023US 2023/0219026 A1Dräger Safety AG & Co. KGaA
- Pressure and Heat Molded Polymer Tube, ect.15 Jun 2023US 2023/0182044 A1Bulk Tank, Inc.
- Gasket and frame assembly for air filter28 Apr 2022US 2022/0126227 A1Baldwin Filters, Inc.
- Silicon carbide porous body and manufacturing method of the same, and break filter using the silicon carbide porous body and manufacturing method of the break filter19 Sep 2019US 2019/0282941 A1CoorsTek, Inc.
Most cited
By later US patents
- Porous membranes32US 5,655,212 AMicropyretics Heaters International, Inc. · 1997
- Porous membranes and methods for making16US 5,590,383 AMicropyretics Heaters International, Inc. · 1996
- Break filter using a silicon carbide porous body and manufacturing method of the break filter1US 10,974,183 B2CoorsTek, Inc. · 2021