F04C 18/3442
The surfaces of the inner and outer member, forming the inlet and
Official title: {the surfaces of the inner and outer member, forming the inlet and outlet opening}
F04C18/3442 (The surfaces of the inner and outer member, forming the inlet and) appears on 91 US grants and 95 published applications in this corpus.
Search patents in F04C- Granted patents
- 91
- Published applications
- 95
- Assignees
- 73
- Inventors
- 213
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 4 |
| 2003 | 6 | 5 |
| 2004 | 3 | 2 |
| 2005 | 4 | 3 |
| 2006 | 0 | 5 |
| 2007 | 2 | 2 |
| 2008 | 1 | 15 |
| 2009 | 4 | 8 |
| 2010 | 1 | 5 |
| 2011 | 6 | 8 |
| 2012 | 3 | 4 |
| 2013 | 4 | 2 |
| 2014 | 3 | 8 |
| 2015 | 4 | 1 |
| 2016 | 3 | 4 |
| 2017 | 7 | 1 |
| 2018 | 0 | 5 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 4 | 3 |
| 2022 | 5 | 1 |
| 2023 | 3 | 3 |
| 2024 | 4 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Valve for rotary fluid displacement assembly and rotary fluid displacement assembly comprising same3 Feb 2026US 12,540,618 B2Torad, Inc.
- Compressor having round part placed near outlet port20 Aug 2024US RE50,087 E1LG Electronics Inc.
- Rotary compressor25 Jun 2024US 12,018,686 B2LG Electronics Inc.
- Rotary compressor with specific suction geometry25 Jun 2024US RE50,022 E1LG Electronics Inc.
- Rotary compressor having improved vane chattering performance6 Feb 2024US 11,891,995 B2LG Electronics Inc.
- Valve For Rotary Fluid Displacement Assembly And Rotary Fluid Displacement Assembly Comprising Same14 May 2026US 2026/0132790 A1Torad, Inc.
- Valve for rotary fluid displacement assembly and rotary fluid displacement assembly comprising same18 Dec 2025US 2025/0382960 A1Torad, Inc.
- Method for Operating a Vacuum Pump, as well as a Vacuum Pump Designed for this Purpose with Two Inlets and One Outlet, its Use and Vacuum Packaging Machines Equipped Therewith18 Dec 2025US 2025/0382961 A1
- Vane rotary compressor4 May 2023US 2023/0137074 A1LG Electronics Inc.
- Rotary compressor27 Apr 2023US 2023/0125736 A1LG Electronics Inc.
Most cited
By later US patents
- Hermetic compressor assembly having a suction chamber and twin axially disposed discharge chambers32US 6,171,076 B2Tecumseh Products Company · 2001
- Rotary vane variable capacity compressor30US 4,137,018 AGeneral Motors Corporation · 1979
- Closed rotary compressor27US 6,533,558 B1Sanyo Electric Co., Ltd. · 2003
- Thermodynamic power system using binary working fluid23US 6,523,347 B12003
- Tandem pump assembly20US 4,586,468 AGeneral Motors Corporation · 1986