B01D 46/2498
The honeycomb filter being defined by mathematical relationships
Official title: {The honeycomb filter being defined by mathematical relationships}
B01D46/2498 (The honeycomb filter being defined by mathematical relationships) appears on 356 US grants and 440 published applications in this corpus.
Search patents in B01D- Granted patents
- 356
- Published applications
- 440
- Assignees
- 59
- Inventors
- 486
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 5 |
| 2003 | 1 | 11 |
| 2004 | 9 | 21 |
| 2005 | 4 | 31 |
| 2006 | 15 | 46 |
| 2007 | 12 | 42 |
| 2008 | 21 | 37 |
| 2009 | 33 | 46 |
| 2010 | 32 | 30 |
| 2011 | 39 | 16 |
| 2012 | 32 | 12 |
| 2013 | 19 | 3 |
| 2014 | 10 | 17 |
| 2015 | 7 | 16 |
| 2016 | 8 | 6 |
| 2017 | 17 | 22 |
| 2018 | 9 | 18 |
| 2019 | 10 | 7 |
| 2020 | 16 | 7 |
| 2021 | 16 | 14 |
| 2022 | 8 | 10 |
| 2023 | 10 | 6 |
| 2024 | 4 | 4 |
| 2025 | 2 | 8 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Honeycomb filter and ceramic filter assembly201US 6,669,751 B1Ibiden Co., Ltd. · 2003
- Honeycomb filter and method of making it163US 4,417,908 ACorning Glass Works · 1983
- Ceramic filters for diesel exhaust particulates158US 4,276,071 AGeneral Motors Corporation · 1981
- Honeycomb filter and method of making it102US 4,416,676 ACorning Glass Works · 1983
- Honeycomb filter and ceramic filter assembly88US 7,112,233 B2Ibiden Co., Ltd. · 2006