B23P 15/10
Pistons
Official title: pistons
B23P15/10 (Pistons) appears on 259 US grants and 244 published applications in this corpus.
Search patents in B23P- Granted patents
- 259
- Published applications
- 244
- Assignees
- 152
- Inventors
- 495
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 7 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 11 | 0 |
| 1986 | 1 | 0 |
| 1987 | 7 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 2 |
| 2002 | 3 | 9 |
| 2003 | 8 | 6 |
| 2004 | 7 | 14 |
| 2005 | 5 | 4 |
| 2006 | 6 | 2 |
| 2007 | 0 | 5 |
| 2008 | 3 | 6 |
| 2009 | 4 | 8 |
| 2010 | 2 | 12 |
| 2011 | 6 | 7 |
| 2012 | 9 | 18 |
| 2013 | 10 | 19 |
| 2014 | 9 | 11 |
| 2015 | 6 | 26 |
| 2016 | 17 | 23 |
| 2017 | 19 | 11 |
| 2018 | 17 | 11 |
| 2019 | 14 | 18 |
| 2020 | 8 | 17 |
| 2021 | 9 | 1 |
| 2022 | 7 | 6 |
| 2023 | 7 | 2 |
| 2024 | 1 | 3 |
| 2025 | 3 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-part piston construction for an opposed-piston engine29 Sep 2026US 12,747,713 B2General Atomics Aeronautical Systems, Inc.
- Asymmetric gas bearing bushing for thermo-pump21 Oct 2025US 12,448,963 B2KLA Corporation
- 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.
- Internal combustion engine with monolithic pilot chamber structure10 Dec 2024US 12,163,462 B1Pratt & Whitney Canada Corp.
- Apparatus for parts supply and lubricant application using robot1 Jan 2026US 2026/0001176 A1BRILS Co., Ltd.
- Member Profile Population2 Oct 2025US 2025/0305444 A1Edatanetworks Inc.
- Internal combustion engine with monolithic pilot chamber structure27 Mar 2025US 2025/0101907 A1Pratt & Whitney Canada Corp.
- Asymmetric gas bearing bushing for thermo-pump10 Oct 2024US 2024/0337259 A1KLA Corporation
- Method for machining an annular groove30 May 2024US 2024/0173782 A1Mahle International GmbH
Most cited
By later US patents
- Fiber-reinforced piston for internal combustion engines and associated method of construction45US 4,677,901 AHonda Giken Kogyo Kabushiki Kaisha · 1987
- Method of producing a one-part cooling duct piston45US 5,778,533 AMahle GmbH · 1998
- Manufacture of pistons43US 4,651,631 AAe PLC · 1987
- Method for the manufacture of a two piece piston and piston40US 5,144,923 AMetal Leve S.A. Industria e Comercio · 1992
- Method and apparatus for making a two piece unitary piston35US 6,155,157 ACaterpillar Inc. · 2000