F16J 1/00
Pistons
Official title: Pistons; Trunk pistons; Plungers (bellows pistons F16J3/06; piston-rings or seats therefor F16J9/00; {manufacture of pistons B23P15/10}; rotary pistons, e.g. for "Wankel" type engines F01C; specific for combustion engines, i.e. constructed to withstand high temperature or modified for guiding, igniting, vaporising or otherwise treating the charge F02F; {pistons for hydraulic engines F03C}; pumps F04B; floats F16K33/00)
F16J1/00 (Pistons) appears on 1,388 US grants and 1,072 published applications in this corpus.
Search patents in F16J- Granted patents
- 1,388
- Published applications
- 1,072
- Assignees
- 687
- Inventors
- 2,570
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 19 | 0 |
| 1978 | 26 | 0 |
| 1979 | 13 | 0 |
| 1980 | 20 | 0 |
| 1981 | 15 | 0 |
| 1982 | 17 | 0 |
| 1983 | 9 | 0 |
| 1984 | 18 | 0 |
| 1985 | 18 | 0 |
| 1986 | 16 | 0 |
| 1987 | 34 | 0 |
| 1988 | 31 | 0 |
| 1989 | 36 | 0 |
| 1990 | 18 | 0 |
| 1991 | 29 | 0 |
| 1992 | 25 | 0 |
| 1993 | 18 | 0 |
| 1994 | 23 | 0 |
| 1995 | 17 | 0 |
| 1996 | 13 | 0 |
| 1997 | 24 | 0 |
| 1998 | 17 | 0 |
| 1999 | 15 | 0 |
| 2000 | 16 | 0 |
| 2001 | 17 | 1 |
| 2002 | 24 | 22 |
| 2003 | 28 | 13 |
| 2004 | 12 | 34 |
| 2005 | 16 | 18 |
| 2006 | 16 | 27 |
| 2007 | 24 | 29 |
| 2008 | 16 | 30 |
| 2009 | 14 | 35 |
| 2010 | 13 | 37 |
| 2011 | 20 | 31 |
| 2012 | 25 | 30 |
| 2013 | 30 | 70 |
| 2014 | 35 | 82 |
| 2015 | 40 | 77 |
| 2016 | 57 | 65 |
| 2017 | 67 | 77 |
| 2018 | 70 | 76 |
| 2019 | 84 | 66 |
| 2020 | 59 | 71 |
| 2021 | 56 | 51 |
| 2022 | 41 | 31 |
| 2023 | 35 | 40 |
| 2024 | 32 | 27 |
| 2025 | 28 | 21 |
| 2026 | 20 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16J 1/10Connection to driving members628
- F16J 1/005Obtained by assembling several pieces258
- F16J 1/08Constructional features providing for lubrication164
- F16J 1/02Bearing surfaces150
- F16J 1/09Pistons: with means for guiding fluids137
- F16J 1/001One-piece pistons104
- F16J 1/04Resilient guiding parts83
- F16J 1/01Pistons: characterised by the use of particular materials72
Recent patents
- O-ring installation device15 Sep 2026US 12,734,658 B1Caterpillar Inc.
- Hydraulic devices including coated surfaces25 Aug 2026US 12,716,119 B2Maxterial, Inc.
- Piston ring seal with reduced stiction18 Aug 2026US 12,710,063 B2
- Split piston metering pump4 Aug 2026US 12,697,431 B2Becton, Dickinson and Company
- Method and system for minimizing energy consumption and maximizing efficiency in engines and machinery with reciprocating parts30 Jun 2026US 12,669,176 B1
- Piston and internal combustion engine8 Oct 2026US 2026/0309104 A1Mahle International GmbH
- Rotary machine17 Sep 2026US 2026/0275868 A1Lumenium LLC
- Piston assembly and associated components, systems, and method3 Sep 2026US 2026/0258863 A1Transcend Energy Group, LLC
- High pressure liquid-jet seal assembly carriage27 Aug 2026US 2026/0249434 A1Hypertherm, Inc.
- Seal assembly for build tanks20 Aug 2026US 2026/0243350 A1General Electric Company
Most cited
By later US patents
- Piston for a needleless valve system83US 8,801,678 B2CareFusion 303, Inc. · 2014
- Two-piece piston assembly53US 4,377,967 AMack Trucks, Inc. · 1983
- Piston assembly49US 4,013,057 ADana Corporation · 1977
- Piston and connecting rod assembly46US 5,115,725 AIsuzu Motors Limited · 1992
- Apparatus for shock mounting of piston rods in internal combustion engines and the like43US 4,078,450 AAlto Automotive, Inc. · 1978