F01N 2530/04
Steel alloys
Official title: Steel alloys, e.g. stainless steel
F01N2530/04 (Steel alloys) appears on 163 US grants and 128 published applications in this corpus.
Search patents in F01N- Granted patents
- 163
- Published applications
- 128
- Assignees
- 116
- Inventors
- 389
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 1 | 2 |
| 2003 | 2 | 6 |
| 2004 | 4 | 10 |
| 2005 | 4 | 8 |
| 2006 | 2 | 4 |
| 2007 | 6 | 6 |
| 2008 | 2 | 3 |
| 2009 | 3 | 3 |
| 2010 | 4 | 8 |
| 2011 | 3 | 6 |
| 2012 | 2 | 1 |
| 2013 | 4 | 9 |
| 2014 | 4 | 5 |
| 2015 | 1 | 8 |
| 2016 | 9 | 2 |
| 2017 | 6 | 6 |
| 2018 | 4 | 6 |
| 2019 | 7 | 4 |
| 2020 | 2 | 10 |
| 2021 | 6 | 6 |
| 2022 | 8 | 4 |
| 2023 | 5 | 5 |
| 2024 | 1 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sound absorbing element with low profile micro-louver slits and muffler assembly using the same9 Dec 2025US 12,492,654 B2ACS Industries, Inc.
- Interconnection system of a urea-based reducing agent injector to an after-treatment an exhaust gas device29 Apr 2025US 12,286,914 B2Fpt Industrial S.P.A.
- Exhaust system heat sink for increasing efficiency of internal combustion engines24 Dec 2024US 12,173,637 B2
- Diesel exhaust fluid injection shield and diesel exhaust fluid injection system22 Aug 2023US 11,732,630 B1Deere & Company
- Catalytic converter anti-theft devices and systems1 Aug 2023US 11,713,706 B2
- Heat-resistant, austenitic cast steel, and exhaust member made thereof14 May 2026US 2026/0132729 A1Proterial, Ltd.
- Ultra-pure ferritic stainless steel and its manufacturing method and use26 Feb 2026US 2026/0055493 A1Shanxi Taigang Stainless Steel Co., Ltd.
- Interconnection system of a urea-based reducing agent injector to an after-treatment an exhaust gas device23 Jan 2025US 2025/0027438 A1Fpt Industrial S.P.A.
- Bushing through a housing component, especially for rough environments with mechanical and thermal stress8 Feb 2024US 2024/0047100 A1Schott AG
- Device and method for suppressing formation of high-melting-point pipe-clogging substance30 Nov 2023US 2023/0383682 A1Mitsui E&S Co., Ltd.
Most cited
By later US patents
- Muffler76US 4,890,691 A1990
- Vertical mount catalytic converter muffler73US 5,808,245 ADonaldson Company, Inc. · 1998
- Metallic core member for catalytic converter and catalytic converter containing same57US 4,928,485 AW. R. Grace & Co.-Conn. · 1990
- Exhaust processor55US 4,625,511 AArvin Industries, Inc. · 1986
- High temperature gas filtering device51US 4,149,862 A1979