F02F 2003/0061
By welding
Official title: {by welding}
F02F2003/0061 (By welding) appears on 162 US grants and 155 published applications in this corpus.
Search patents in F02F- Granted patents
- 162
- Published applications
- 155
- Assignees
- 55
- Inventors
- 263
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 2 | 4 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 4 |
| 2010 | 1 | 8 |
| 2011 | 1 | 7 |
| 2012 | 5 | 9 |
| 2013 | 6 | 7 |
| 2014 | 4 | 14 |
| 2015 | 6 | 16 |
| 2016 | 12 | 18 |
| 2017 | 9 | 17 |
| 2018 | 12 | 13 |
| 2019 | 21 | 10 |
| 2020 | 11 | 10 |
| 2021 | 8 | 0 |
| 2022 | 4 | 5 |
| 2023 | 2 | 4 |
| 2024 | 4 | 1 |
| 2025 | 2 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-part piston construction for an opposed-piston engine29 Sep 2026US 12,747,713 B2General Atomics Aeronautical Systems, Inc.
- Steel piston for an internal combustion engine24 Mar 2026US 12,584,453 B2Federal-Mogul Nurnberg GmbH
- Piston assembly with opposing injection regions for an opposed-piston engine3 Jun 2025US 12,320,312 B2Achates Power, Inc.
- Method for making a lightweight internal combustion engine piston with micro chambers4 Feb 2025US 12,215,652 B1Lean-Burn Combustion, Inc.
- Piston blank, piston and method3 Sep 2024US 12,078,247 B2KS Kolbenschmidt GmbH
- Piston and engine9 Jul 2026US 2026/0194026 A1Baudouin (Weifang) Power Co., Ltd.
- A piston head for combustion cylinder, and a cooling gallery for a piston head of a combustion cylinder9 Jul 2026US 2026/0194027 A1Cummins Inc.
- Piston Blank, Piston, And Method17 Jul 2025US 2025/0230779 A1KS Kolbenschmidt GmbH
- Steel piston for an internal combustion engine26 Sep 2024US 2024/0318610 A1Federal-Mogul Nurnberg GmbH
- Piston assembly with opposing injection regions for an opposed-piston engine7 Dec 2023US 2023/0392564 A1Achates Power, Inc.
Most cited
By later US patents
- Piston for internal combustion engines56US 4,581,983 AKarl Schmidt GmbH · 1986
- Oil cooled piston47US 4,286,505 ACaterpillar Tractor Co. · 1981
- Oil-cooled piston for a heat engine43US 4,011,797 ADAMPERS Societe Anonyme · 1977
- Coolable trunk piston for internal combustion engines40US 5,052,280 AMahle GmbH · 1991
- Pistons for an internal combustion engine40US 5,081,968 ABorgo-Nova SpA · 1992