F04C 2/123
With radially or approximately radially from the rotor body extending tooth-like elements
Official title: {with radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth}
F04C2/123 (With radially or approximately radially from the rotor body extending tooth-like elements) appears on 31 US grants and 29 published applications in this corpus.
Search patents in F04C- Granted patents
- 31
- Published applications
- 29
- Assignees
- 25
- Inventors
- 81
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 5 |
| 2015 | 1 | 1 |
| 2016 | 4 | 3 |
| 2017 | 3 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 6 |
| 2021 | 3 | 0 |
| 2022 | 0 | 1 |
| 2023 | 2 | 3 |
| 2024 | 2 | 2 |
| 2025 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Pump for conveying a fluid4 Nov 2025US 12,460,634 B2Vogelsang GmbH & Co. KG
- Asymmetric rotor including a cutting edge and a pump that includes the asymmetric rotor16 Sep 2025US 12,416,307 B2Haarslev Industries A/S
- Electronic positive displacement fluid pump with motor cooling and air purging1 Apr 2025US 12,264,673 B2Phinia Jersey Holdings LLC
- Rotary positive displacement pump13 Aug 2024US 12,060,882 B2Alfa Laval Corporate AB
- Device for recirculating an at least partially gaseous composition containing hydrogen and fuel cell system16 Apr 2024US 11,959,478 B2Busch Produktions GmbH
- Electronic positive displacement fluid pump with motor cooling and air purging3 Oct 2024US 2024/0328415 A1Delphi Technologies IP Limited
- Pump for conveying a fluid22 Feb 2024US 2024/0060489 A1Vogelsang GmbH & Co. KG
- Screw spindle pump15 Jun 2023US 2023/0184246 A1Leistritz Pumpen GmbH
- A rotary positive displacement pump4 May 2023US 2023/0138342 A1Alfa Laval Corporate AB
- Device for recirculating an at least partially gaseous composition containing hydrogen and fuel cell system19 Jan 2023US 2023/0013325 A1Busch Produktions GmbH
Most cited
By later US patents
- Adjustable wearplates rotary pump26US 4,940,394 ABaker Hughes Incorporated · 1990
- Multi-chamber positive displacement fluid device21US 6,666,666 B12003
- Roots type supercharger8US 5,180,299 AFeuling Engineering, Inc. · 1993
- Self-driving fluid pump7US 5,755,566 AKalish Canada Inc. · 1998
- Positive displacement pump with improved rotor design7US 8,087,914 B12012