F04C 3/04
Of intermeshing engagement type, i.e. with engagement of co-operating members similar to
Official title: of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
F04C3/04 (Of intermeshing engagement type, i.e. with engagement of co-operating members similar to) appears on 16 US grants and 11 published applications in this corpus.
Search patents in F04C- Granted patents
- 16
- Published applications
- 11
- Assignees
- 11
- Inventors
- 28
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 2 | 2 |
| 2022 | 2 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pump with high torque drive23 Sep 2025US 12,421,965 B2Graco Minnesota Inc.
- Seal assembly for high pressure single screw compressor9 Jan 2024US 11,867,180 B2Copeland Industrial LP
- Pump with high torque drive18 Oct 2022US 11,473,576 B2Graco Minnesota Inc.
- Axial flow fan with high temperature resistance for ship desulfurization system1 Mar 2022US 11,261,874 B2Shandong Pure Ocean Technology Co.,Ltd
- Pump with high torque drive7 Dec 2021US 11,193,486 B2Graco Minnesota Inc.
- Screw compressor and refrigeration apparatus15 Jan 2026US 2026/0016006 A1Daikin Industries, Ltd.
- Pump with high torque drive19 Jan 2023US 2023/0019323 A1Graco Minnesota Inc.
- Pump with high torque drive24 Feb 2022US 2022/0056909 A1Graco Minnesota Inc.
- Pump with high torque drive30 Sep 2021US 2021/0301819 A1Graco Minnesota Inc.
- Axial Flow Fan with High Temperature Resistance for Ship Desulfurization System20 May 2021US 2021/0148375 A1Shandong Pure Ocean Technology Co.,Ltd
Most cited
By later US patents
- Screw pump6US 4,772,177 AHayashi Seiko Kabushiki Kaisha · 1988
- Rotative machine for fluids with spiral-like passages and vane wheels4US 4,021,165 A1977
- Worm pump for thick media and/or media containing lumps, e.g. meat4US 5,364,251 ASimo Industries A/S · 1994
- Seal assembly for high pressure single screw compressor2US 11,867,180 B2Copeland Industrial LP · 2024
- Screw pump having eccentric circular sealing discs2US 5,395,225 A1995