F04B 39/068
Prevention of freezing
Official title: {prevention of freezing}
F04B39/068 (Prevention of freezing) appears on 11 US grants and 10 published applications in this corpus.
Search patents in F04B- Granted patents
- 11
- Published applications
- 10
- Assignees
- 13
- Inventors
- 28
- Latest grant
- 7 Apr 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for operating a pneumatic system of a vehicle7 Apr 2020US 10,611,354 B2WABCO GmbH
- Cryogenic pump with insulating arrangement12 Jun 2018US 9,995,290 B2Caterpillar Inc.
- Compressor arrangement with bypass means for preventing freezing of the cooling unit5 May 2015US 9,022,068 B2Knorr-Bremse Systeme FüR Schienenfahrzeuge GmbH
- Vent ice prevention method7 Apr 2015US 8,997,504 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Compressor freeze up prevention in cold weather30 Sep 2014US 8,845,300 B2Illinois Tool Works Inc.
- Piston pump with quick exhaust slide valves2 Apr 2026US 2026/0092600 A1Samoa Industrial S.A.
- Pump Assembly with Hydraulic System Cooling26 Mar 2026US 2026/0085676 A1Exel Industries
- Method for operating a pneumatic system of a vehicle20 Jul 2017US 2017/0203742 A1WABCO GmbH
- Cryogenic Pump with Insulating Arrangement26 May 2016US 2016/0146199 A1Caterpillar Inc.
- Vent ice prevention method12 Jun 2014US 2014/0158206 A1Air Liquide Process & Construction, Inc.
Most cited
By later US patents
- Method and apparatus for oil sump pressure control3US 5,211,542 ACarrier Corporation · 1993
- Aftercooler bypass means for a locomotive compressed air system3US 6,283,725 B1Westinghouse Air Brake Company · 2001
- Aftercooler bypass means for a locomotive compressed air system2US 6,952,932 B2Westinghouse Air Brake Company · 2005
- Pump with improved cold temperature performance1US 6,485,278 B2Delphi Technologies, Inc. · 2002
- Aftercooler bypass means for a locomotive compressed air system1US 6,644,934 B2Westinghouse Air Brake Technologies Corporation · 2003