B01D 46/249
Quadrangular e.g. square or diamond
Official title: {Quadrangular e.g. square or diamond}
B01D46/249 (Quadrangular e.g. square or diamond) appears on 195 US grants and 254 published applications in this corpus.
Search patents in B01D- Granted patents
- 195
- Published applications
- 254
- Assignees
- 50
- Inventors
- 343
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 4 |
| 2003 | 1 | 4 |
| 2004 | 2 | 9 |
| 2005 | 2 | 16 |
| 2006 | 3 | 10 |
| 2007 | 4 | 12 |
| 2008 | 13 | 15 |
| 2009 | 10 | 16 |
| 2010 | 16 | 11 |
| 2011 | 8 | 15 |
| 2012 | 14 | 8 |
| 2013 | 5 | 1 |
| 2014 | 8 | 11 |
| 2015 | 5 | 18 |
| 2016 | 9 | 12 |
| 2017 | 12 | 16 |
| 2018 | 10 | 8 |
| 2019 | 11 | 11 |
| 2020 | 8 | 9 |
| 2021 | 9 | 10 |
| 2022 | 10 | 14 |
| 2023 | 8 | 13 |
| 2024 | 9 | 3 |
| 2025 | 7 | 5 |
| 2026 | 6 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Honeycomb structure8 Sep 2026US 12,728,377 B2NGK Insulators, Ltd.
- Honeycomb filter26 May 2026US 12,636,603 B2NGK Insulators, Ltd.
- Honeycomb filter21 Apr 2026US 12,605,665 B2NGK Insulators, Ltd.
- Honeycomb filter14 Apr 2026US 12,599,862 B2NGK Insulators, Ltd.
- Honeycomb filter17 Feb 2026US 12,551,834 B2NGK Insulators, Ltd.
- Low bulk density, high geometric surface area honeycomb bodies4 Jun 2026US 2026/0152445 A1Corning Incorporated
- Honeycomb filter7 May 2026US 2026/0124570 A1NGK Insulators, Ltd.
- Honeycomb filter1 Jan 2026US 2026/0001022 A1NGK Insulators, Ltd.
- Reactor and gas recovery device25 Dec 2025US 2025/0387744 A1NGK Insulators, Ltd.
- Honeycomb filter2 Oct 2025US 2025/0303334 A1NGK Insulators, Ltd.
Most cited
By later US patents
- Honeycomb filter and method of making it163US 4,417,908 ACorning Glass Works · 1983
- Pre-form for exhaust aftertreatment control filter63US 6,582,490 B2Fleetguard, Inc. · 2003
- Honeycomb segment58US 7,858,169 B2NGK Insulators, Ltd. · 2010
- Honeycomb with varying channel size and die for manufacturing50US 6,696,132 B2Corning Incorporated · 2004
- Ceramic filter for exhaust gas emission control43US 7,393,376 B2Ibiden Co., Ltd. · 2008