F04C 2230/80
Repairing methods
F04C2230/80 (Repairing methods) appears on 45 US grants and 59 published applications in this corpus.
Search patents in F04C- Granted patents
- 45
- Published applications
- 59
- Assignees
- 36
- Inventors
- 120
- Latest grant
- 2 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 4 |
| 2011 | 1 | 5 |
| 2012 | 2 | 6 |
| 2013 | 3 | 3 |
| 2014 | 3 | 5 |
| 2015 | 3 | 2 |
| 2016 | 3 | 3 |
| 2017 | 2 | 3 |
| 2018 | 4 | 6 |
| 2019 | 1 | 4 |
| 2020 | 4 | 3 |
| 2021 | 4 | 1 |
| 2022 | 4 | 2 |
| 2023 | 3 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rescue mechanical seal and method2 Apr 2024US 11,946,545 B1
- Scroll fluid machine having separable main body unit and motor unit24 Oct 2023US 11,795,943 B2Hitachi Industrial Equipment Systems Co., Ltd.
- Oil-lubricated rotary vane vacuum pump26 Sep 2023US 11,767,845 B2Gebr. Becker GmbH
- Rescue mechanical seal and method21 Mar 2023US 11,608,894 B1
- Progressing cavity pump and methods of operation15 Nov 2022US 11,499,549 B2Activate Artificial Lift Inc.
- Predicting tip seal wear in scroll pump23 Jul 2026US 2026/0210358 A1Agilent Technologies, Inc.
- Determining tip seal maintenance requirement in scroll pump23 Jul 2026US 2026/0210359 A1Agilent Technologies, Inc.
- Seal assembly for progressive cavity pump4 Dec 2025US 2025/0369442 A1National Oilwell Varco, L. P.
- Scroll pump with two-piece crankshaft5 Jun 2025US 2025/0180022 A1Agilent Technologies, Inc.
- Scroll Fluid Machine Having Separable Main Body Unit and Motor Unit3 Nov 2022US 2022/0349400 A1Hitachi Industrial Equipment Systems Co., Ltd.
Most cited
By later US patents
- Supports for rotatable housing of liquid ring pumps18US 5,395,215 AThe Nash Engineering Company · 1995
- Fluid pump17US 7,255,541 B2Kabushiki Kaisha Toyota Jidoshokki · 2007
- Pump having modular shaft bearings and seals15US 8,430,657 B2Roper Pump Company · 2013
- Keyed insert plate for curved rotary lobe pump chamber walls12US 5,567,140 AITT Corporation · 1996
- Method and apparatus for compressor re-manufacture7US 7,338,263 B2J&E Hall Limited · 2008