F04C 2270/40
Conditions across a pump or machine
F04C2270/40 (Conditions across a pump or machine) appears on 9 US grants and 11 published applications in this corpus.
Search patents in F04C- Granted patents
- 9
- Published applications
- 11
- Assignees
- 11
- Inventors
- 26
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 3 |
| 2022 | 1 | 1 |
| 2023 | 2 | 2 |
| 2024 | 2 | 1 |
| 2025 | 2 | 1 |
By publication year.
Recent patents
- Device for compressing a gaseous fluid and method for operating the device25 Nov 2025US 12,480,493 B2Hanon Systems
- Oil pump device14 Jan 2025US 12,196,202 B2Mikuni Corporation
- Gas compressor19 Nov 2024US 12,146,481 B2Hitachi, Ltd.
- Oil feed type air compressor21 May 2024US 11,988,217 B2Hitachi Industrial Equipment Systems Co., Ltd.
- Control system for liquid ring pumps5 Sep 2023US 11,746,785 B2Edwards Technologies Vacuum Engineering (Qingdao) Company Limited
- Compressor system having integrated ambient sensor18 Sep 2025US 2025/0290510 A1Kaeser Kompressoren SE
- Device for compressing a gaseous fluid and method for operating the device7 Nov 2024US 2024/0369062 A1Hanon Systems
- Gas compressor16 Nov 2023US 2023/0366400 A1Hitachi, Ltd.
- Oil Feed Type Air Compressor9 Nov 2023US 2023/0358248 A1Hitachi Industrial Equipment Systems Co., Ltd.
- Oil pump device29 Dec 2022US 2022/0412350 A1Mikuni Corporation
Most cited
By later US patents
- Methods for restricting backflow of solids in a pump assembly2US 9,004,265 B2General Electric Company · 2015
- Method for determining a flow volume of a fluid delivered by a pump1US 11,512,697 B2Leistritz Pumpen GmbH · 2022
- Control system for liquid ring pumps1US 11,746,785 B2Edwards Technologies Vacuum Engineering (Qingdao) Company Limited · 2023
- Detection and correction of reverse operation of a compressor in a refrigeration system1US 8,225,621 B2IMI Cornelius Inc. · 2012