B01D 46/244
Of the plugs
Official title: {of the plugs}
B01D46/244 (Of the plugs) appears on 34 US grants and 44 published applications in this corpus.
Search patents in B01D- Granted patents
- 34
- Published applications
- 44
- Assignees
- 10
- Inventors
- 83
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 5 |
| 2006 | 0 | 5 |
| 2007 | 1 | 0 |
| 2008 | 3 | 4 |
| 2009 | 3 | 5 |
| 2010 | 0 | 2 |
| 2011 | 4 | 1 |
| 2012 | 2 | 0 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 3 |
| 2020 | 1 | 3 |
| 2021 | 4 | 2 |
| 2022 | 3 | 1 |
| 2023 | 1 | 3 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Honeycomb filter20 Jan 2026US 12,528,040 B2NGK Insulators, Ltd.
- Honeycomb filter23 Dec 2025US 12,502,634 B2NGK Insulators, Ltd.
- Exhaust gas purification filter26 Dec 2023US 11,850,540 B2Denso Corporation
- Pillar-shaped honeycomb structure and method for manufacturing same29 Nov 2022US 11,511,268 B2NGK Insulators, Ltd.
- Honeycomb structure and exhaust gas purifying device28 Jun 2022US 11,369,952 B2NGK Insulators, Ltd.
- Honeycomb structure2 Oct 2025US 2025/0303335 A1NGK Insulators, Ltd.
- Honeycomb filter20 Jun 2024US 2024/0198269 A1NGK Insulators, Ltd.
- Honeycomb filter21 Dec 2023US 2023/0405505 A1NGK Insulators, Ltd.
- Cement mixtures for plugging multicellular filter bodies and methods of making the same25 May 2023US 2023/0159398 A1Corning Incorporated
- Honeycomb plugging apparatus and methods providing reduced slump13 Apr 2023US 2023/0110252 A1Corning Incorporated
Most cited
By later US patents
- Heated cellular structures64US 5,259,190 ACorning Incorporated · 1993
- Honeycomb unit and honeycomb structure35US 7,462,216 B2Ibiden Co., Ltd. · 2008
- Ceramic honeycomb filter and its structure31US 6,890,616 B2Hitachi Metals, Ltd. · 2005
- Exhaust gas filter and apparatus for treating exhaust gases22US 5,595,581 ANGK Insulators, Ltd. · 1997
- Exhaust gas purifying filter15US 6,800,107 B2Denso Corporation · 2004