B22F 5/02
Manufacture of workpieces or articles from metallic powder characterised by the special
Official title: of piston rings
B22F5/02 (Manufacture of workpieces or articles from metallic powder characterised by the special) appears on 17 US grants and 26 published applications in this corpus.
Search patents in B22F- Granted patents
- 17
- Published applications
- 26
- Assignees
- 24
- Inventors
- 72
- Latest grant
- 22 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 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 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 4 |
| 2017 | 3 | 0 |
| 2018 | 0 | 5 |
| 2019 | 1 | 1 |
| 2020 | 1 | 5 |
| 2021 | 2 | 2 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Additive manufacturing with nanofunctionalized precursors22 Apr 2025US 12,280,432 B2HRL Laboratories, LLC
- Additive manufacturing with nanofunctionalized precursors5 Mar 2024US 11,919,085 B2HRL Laboratories, LLC
- Method for producing a piston10 Oct 2023US 11,780,009 B2Mahle International GmbH
- Additive manufacturing with nanofunctionalized precursors14 Sep 2021US 11,117,193 B2HRL Laboratories, LLC
- Carbide with toughness-increasing structure31 Aug 2021US 11,104,980 B2H. C. Starck Tungsten GmbH
- Additive manufacturing with nanofunctionalized precursors31 Jul 2025US 2025/0242407 A1HRL Laboratories, LLC
- Additive manufacturing with nanofunctionalized precursors14 Mar 2024US 2024/0082913 A1HRL Laboratories, LLC
- Method for producing a piston3 Feb 2022US 2022/0032371 A1Mahle International GmbH
- Additive manufacturing with nanofunctionalized precursors16 Sep 2021US 2021/0283689 A1HRL Laboratories, LLC
- Copper alloy compositions having enhanced thermal conductivity and wear resistance18 Mar 2021US 2021/0078073 A1Materion Corporation
Most cited
By later US patents
- Method for the controlled mechanical working of sintered porous powder metal shapes to effect surface and subsurface densification38US 4,059,879 ATextron Inc. · 1977
- Method for producing powder metal cylinder bore liners7US 5,842,109 AFord Global Technologies, LLC · 1998
- Valve guide and process for manufacturing thereof6US 6,012,703 AHitachi Powdered Metals Co., Ltd. · 2000
- Thermal spray applications using iron based alloy powder3US 9,624,568 B2Federal-Mogul Corporation · 2017
- Method for producing a valve seat ring2US 10,272,496 B2Mahle International GmbH · 2019