F01N 2450/04
Filling or emptying a chamber with granular material
F01N2450/04 (Filling or emptying a chamber with granular material) appears on 22 US grants and 5 published applications in this corpus.
Search patents in F01N- Granted patents
- 22
- Published applications
- 5
- Assignees
- 17
- Inventors
- 36
- Latest grant
- 5 Apr 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 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 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 2 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for operating a particulate filter in a vehicle, and particulate filter for an internal combustion engine in a vehicle5 Apr 2022US 11,293,321 B2Bayerische Motoren Werke Aktiengesellschaft
- Method and apparatus for filling silencer with glass fiber29 Mar 2022US 11,286,820 B2Crefact Co., Ltd.
- Cleaning tool for vehicle exhaust aftertreatment device and method of using same21 Jul 2020US 10,716,442 B2IDSC Holdings, LLC
- Maintenance method for particulate filter22 Mar 2011US 7,909,916 B2Hino Motors, Ltd.
- Adsorber for purifying combustion gases20 Oct 1998US 5,824,139 ASteag Aktiengesellschaft
- Honeycomb structure20 Aug 2026US 2026/0241375 A1NGK Insulators, Ltd.
- Method and apparatus for filling silencer with glass fiber25 Nov 2021US 2021/0363903 A1Crefact Co., Ltd.
- Method for Operating a Particulate Filter in a Vehicle, and Particulate Filter for an Internal Combustion Engine in a Vehicle19 Nov 2020US 2020/0362737 A1Bayerische Motoren Werke Aktiengesellschaft
- Cleaning Tool for Vehicle Exhaust Aftertreatment Device And Method of Using Same21 Feb 2019US 2019/0053677 A1IDSC Holdings, LLC
- Maintenance method for particulate filter1 Oct 2009US 2009/0241780 A1Hino Motors, Ltd.
Most cited
By later US patents
- Noise abatement muffler19US 4,848,513 ACed's, Inc. · 1989
- Catalytic converter of a radial flow type13US 4,124,357 AToyota Jidosha Kogyo Kabushiki Kaisha · 1978
- Variable capacity catalytic converter12US 3,996,016 AUop LLC · 1976
- Catalytic converter apparatus for engine8US 4,151,717 AMitsubishi Jidosha Kogyo Kabushika Kaisha · 1979
- Catalyst changing system7US 3,964,528 AOxy-Catalyst, Incorporated · 1976