F04C 2270/22
Temperature difference
F04C2270/22 (Temperature difference) appears on 15 US grants and 15 published applications in this corpus.
Search patents in F04C- Granted patents
- 15
- Published applications
- 15
- Assignees
- 13
- Inventors
- 25
- Latest grant
- 24 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 3 |
| 2015 | 0 | 1 |
| 2016 | 4 | 3 |
| 2017 | 2 | 3 |
| 2018 | 3 | 1 |
| 2019 | 2 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Progressive cavity pump cartridge with infrared temperature sensors on fluid inlet and outlet24 Jun 2025US 12,338,816 B2Johnson & Johnson Surgical Vision, Inc.
- Compressor with liquid injection cooling30 Mar 2021US 10,962,012 B2Hicor Technologies, Inc.
- Oil flooded compressor system and method14 Jul 2020US 10,711,785 B2Ingersoll-Rand Industrial U.S., Inc.
- Oil flooded compressor system and method19 Feb 2019US 10,208,754 B2Ingersoll-Rand Company
- Compressor having oil-level sensing system15 Jan 2019US 10,180,139 B2Emerson Climate Technologies, Inc.
- Progressive cavity pump cartridge with infrared temperature sensors on fluid inlet and outlet26 Jan 2023US 2023/0028279 A1Johnson & Johnson Surgical Vision, Inc.
- Oil flooded compressor system and method6 Jun 2019US 2019/0170144 A1Ingersoll-Rand Company
- Compressor with liquid injection cooling19 Apr 2018US 2018/0106255 A1Hicor Technologies, Inc.
- Oil flooded compressor system and method13 Apr 2017US 2017/0101991 A1Ingersoll-Rand Company
- Compressor Having Oil-Level Sensing System30 Mar 2017US 2017/0089340 A1Emerson Climate Technologies, Inc.
Most cited
By later US patents
- Evaporator water temperature control for a chiller system31US 5,419,146 AAmerican Standard Inc. · 1995
- Compressor having a control and diagnostic module24US 9,310,439 B2Emerson Climate Technologies, Inc. · 2016
- Compressor with liquid injection cooling5US 9,856,878 B2Hicor Technologies, Inc. · 2018
- Compressor having oil-level sensing system3US 10,180,139 B2Emerson Climate Technologies, Inc. · 2019
- Compressor having oil-level sensing system2US 10,125,768 B2Emerson Climate Technologies, Inc. · 2018