F04C 2230/23
By permanently joining parts together
Official title: by permanently joining parts together
F04C2230/23 (By permanently joining parts together) appears on 92 US grants and 114 published applications in this corpus.
Search patents in F04C- Granted patents
- 92
- Published applications
- 114
- Assignees
- 64
- Inventors
- 276
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 5 |
| 2003 | 3 | 2 |
| 2004 | 0 | 10 |
| 2005 | 3 | 1 |
| 2006 | 2 | 5 |
| 2007 | 3 | 3 |
| 2008 | 4 | 4 |
| 2009 | 2 | 4 |
| 2010 | 3 | 4 |
| 2011 | 1 | 4 |
| 2012 | 3 | 3 |
| 2013 | 2 | 3 |
| 2014 | 4 | 2 |
| 2015 | 5 | 2 |
| 2016 | 1 | 8 |
| 2017 | 3 | 5 |
| 2018 | 2 | 8 |
| 2019 | 3 | 5 |
| 2020 | 7 | 6 |
| 2021 | 7 | 4 |
| 2022 | 5 | 6 |
| 2023 | 1 | 7 |
| 2024 | 8 | 4 |
| 2025 | 6 | 3 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compressor including refrigerant introduction tube10 Feb 2026US 12,546,317 B2Daikin Industries, Ltd.
- Eccentric screw pump with weakening recesses in the power train27 Jan 2026US 12,535,070 B2NETZSCH Pumpen & Systeme GmbH
- Compressor with bottom cover and bearing block arrangement16 Dec 2025US 12,497,966 B2Copeland Climate Technologies (Suzhou) Co. Ltd.
- Horizontal compressor16 Dec 2025US 12,497,967 B2Samsung Electronics Co., Ltd.
- Hermetic compressor23 Sep 2025US 12,421,951 B2Fujitsu General Limited
- Compliant bearing housing for compressor systems13 Aug 2026US 2026/0235123 A1
- Enhanced motor housing for motor and pump system28 May 2026US 2026/0149328 A1
- Sinusoidal pump with blocking slide, and production method14 May 2026US 2026/0132788 A1Watson Marlow GmbH - MasoSine Division
- Progressive cavity fluid pump and associated methods12 Mar 2026US 2026/0071621 A1Thru Tubing Solutions, Inc.
- Progressive cavity fluid pump and associated methods5 Mar 2026US 2026/0063125 A1
Most cited
By later US patents
- Scroll type fluid displacement apparatus15US 4,677,949 A1987
- Scroll compressor having separation plate between high and low pressures15US 6,017,203 AMitsubishi Denki Kabushiki Kaisha · 2000
- Refrigeration system having a rotary compressor13US 7,128,540 B2Sanyo Electric Co., Ltd. · 2006
- Electric power terminal feed-through12US 7,745,725 B2Emerson Electric Co. · 2010
- Seal structure for casing11US 6,193,485 B1Daikin Industries, Ltd. · 2001