F01N 3/281
Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
Official title: {Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates}
F01N3/281 (Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates) appears on 719 US grants and 439 published applications in this corpus.
Search patents in F01N- Granted patents
- 719
- Published applications
- 439
- Assignees
- 237
- Inventors
- 1,207
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 11 | 0 |
| 1989 | 20 | 0 |
| 1990 | 18 | 0 |
| 1991 | 14 | 0 |
| 1992 | 33 | 0 |
| 1993 | 13 | 0 |
| 1994 | 31 | 0 |
| 1995 | 38 | 0 |
| 1996 | 26 | 0 |
| 1997 | 32 | 0 |
| 1998 | 28 | 0 |
| 1999 | 18 | 0 |
| 2000 | 23 | 0 |
| 2001 | 26 | 9 |
| 2002 | 14 | 18 |
| 2003 | 21 | 29 |
| 2004 | 19 | 23 |
| 2005 | 8 | 19 |
| 2006 | 14 | 26 |
| 2007 | 12 | 22 |
| 2008 | 9 | 19 |
| 2009 | 13 | 11 |
| 2010 | 21 | 14 |
| 2011 | 12 | 22 |
| 2012 | 14 | 12 |
| 2013 | 11 | 8 |
| 2014 | 12 | 16 |
| 2015 | 9 | 12 |
| 2016 | 10 | 5 |
| 2017 | 11 | 14 |
| 2018 | 13 | 26 |
| 2019 | 18 | 32 |
| 2020 | 13 | 18 |
| 2021 | 24 | 21 |
| 2022 | 26 | 24 |
| 2023 | 14 | 14 |
| 2024 | 12 | 10 |
| 2025 | 5 | 8 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrically heatable honeycomb structure having corrugated layers of different cell density22 Sep 2026US 12,742,405 B2Vitesco Technologies GmbH
- Display driving device comprising an emission circuit and positive feedback circuit22 Sep 2026US 12,742,407 B2Purem GmbH
- Composite, zoned oxidation catalyst for a compression ignition internal combustion engine25 Aug 2026US 12,714,990 B2Johnson Matthey Public Limited Company
- Honeycomb structure, electrically heating support, and exhaust gas purification device25 Aug 2026US 12,716,374 B2NGK Insulators, Ltd.
- Methane combustion catalyst, method for producing the same and method for purifying combustion exhaust gas20 Jan 2026US 12,528,075 B2Tanaka Kikinzoku Kogyo K.K.
- Exhaust system3 Sep 2026US 2026/0258744 A1Isuzu Motors Limited
- Honeycomb heater body13 Aug 2026US 2026/0235061 A1Corning Incorporated
- Porous metal structure13 Aug 2026US 2026/0235062 A1Amogreentech Co., Ltd.
- Apparatus for exhaust gas aftertreatment having a slotted matrix9 Jul 2026US 2026/0193999 A1Emitec Technologies GmbH
- Exhaust gas control device14 May 2026US 2026/0132727 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Method and apparatus for treating an engine exhaust gas stream154US 6,171,556 B2Engelhard Corporation · 2001
- Energy management system for hybrid vehicle125US 5,345,761 AFord Motor Company · 1994
- Particulate trap for diesel engine114US 5,908,480 ASumitomo Electric Industries, Ltd. · 1999
- Catalyst structure employing integral heat exchange105US 5,512,250 ACatalytica, Inc. · 1996
- Process for making metal substrate catalytic converter cores103US 4,711,009 AW. R. Grace & Co. · 1987