F01B 3/04
The piston motion being transmitted by curved surfaces
Official title: the piston motion being transmitted by curved surfaces
F01B3/04 (The piston motion being transmitted by curved surfaces) appears on 167 US grants and 86 published applications in this corpus.
Search patents in F01B- Granted patents
- 167
- Published applications
- 86
- Assignees
- 39
- Inventors
- 194
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 2 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 0 |
| 2002 | 5 | 3 |
| 2003 | 5 | 7 |
| 2004 | 5 | 6 |
| 2005 | 2 | 4 |
| 2006 | 5 | 1 |
| 2007 | 2 | 4 |
| 2008 | 2 | 2 |
| 2009 | 1 | 3 |
| 2010 | 3 | 4 |
| 2011 | 2 | 6 |
| 2012 | 2 | 6 |
| 2013 | 3 | 2 |
| 2014 | 2 | 4 |
| 2015 | 5 | 2 |
| 2016 | 4 | 5 |
| 2017 | 3 | 4 |
| 2018 | 3 | 3 |
| 2019 | 5 | 7 |
| 2020 | 2 | 3 |
| 2021 | 5 | 4 |
| 2022 | 2 | 2 |
| 2023 | 2 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Carriage assembly14 Jan 2025US 12,196,084 B2Zpe Ltd
- Cam machine with adjustment mechanism21 Nov 2023US 11,821,318 B2
- Rotational metering pump for insulin patch11 Jul 2023US 11,696,983 B2Becton, Dickinson and Company
- Gas or fluid driven mechanical stepper motor2 Aug 2022US 11,401,811 B2Eindhoven Medical Robotics B.V.
- Opposed piston engine2 Aug 2022US 11,401,812 B2Hts LLC
- Multi-stage system16 Apr 2026US 2026/0103985 A1Kn Gg IP Holding and Licensing, LLC
- Cam profile drive assembly1 May 2025US 2025/0137371 A1
- Carriage assembly14 Nov 2024US 2024/0376823 A1Zpe Ltd
- Rotational metering pump with cam-driven valving shuttle interlock5 Oct 2023US 2023/0313787 A1Becton, Dickinson and Company
- Cam machine with adjustment mechanism2 Jun 2022US 2022/0170370 A1
Most cited
By later US patents
- Apparatus and method for a balanced internal combustion engine coupled to a drive shaft59US 4,834,033 A1989
- Energy transfer device utilizing driveshaft having continuously variable inclined track49US 4,462,345 APulsar S.R.L. · 1984
- Internal combustion engine and operating cycle therefor47US 4,635,590 A1987
- Two plus two stroke opposed piston heat engine46US 4,996,953 A1991
- Multiple cylinder sinusoidal engine39US 4,090,478 A1978