F01C 19/02
Radially-movable sealings for working fluids
F01C19/02 (Radially-movable sealings for working fluids) appears on 176 US grants and 132 published applications in this corpus.
Search patents in F01C- Granted patents
- 176
- Published applications
- 132
- Assignees
- 86
- Inventors
- 262
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 27 | 0 |
| 1977 | 11 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 3 | 8 |
| 2006 | 4 | 4 |
| 2007 | 3 | 5 |
| 2008 | 1 | 5 |
| 2009 | 1 | 8 |
| 2010 | 4 | 5 |
| 2011 | 2 | 4 |
| 2012 | 4 | 4 |
| 2013 | 2 | 11 |
| 2014 | 8 | 12 |
| 2015 | 6 | 11 |
| 2016 | 5 | 6 |
| 2017 | 9 | 12 |
| 2018 | 6 | 3 |
| 2019 | 11 | 6 |
| 2020 | 2 | 9 |
| 2021 | 8 | 5 |
| 2022 | 9 | 1 |
| 2023 | 3 | 6 |
| 2024 | 2 | 2 |
| 2025 | 6 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotary piston machine3 Feb 2026US 12,540,572 B2
- Combined sealing piece, volumetric machine and wide fuel engine18 Nov 2025US 12,473,872 B2
- Three-cycle (stroke) rotary radial vane piston internal combustion engine23 Sep 2025US 12,421,852 B1
- Pumps, compressors, and expanders with a teardrop-shaped rotor8 Jul 2025US 12,352,268 B2Rotoliptic Technologies Incorporated
- Integrated internal continuous combustion rotary engine27 May 2025US 12,312,960 B1
- Rotary Machines With Teardrop-Shaped Rotors2 Oct 2025US 2025/0305496 A1Rotoliptic Technologies Incorporated
- Combined Sealing Piece, Volumetric Machine and Wide Fuel Engine19 Jun 2025US 2025/0198363 A1
- Rotary piston machine10 Apr 2025US 2025/0116223 A1
- Rotary engine with seal having elastomeric and metallic members5 Dec 2024US 2024/0401545 A1Pratt & Whitney Canada Corp.
- Movement Device9 May 2024US 2024/0151145 A1Lonati S. P. A.
Most cited
By later US patents