F04D 29/143
Especially adapted for elastic fluid pumps
Official title: {especially adapted for elastic fluid pumps}
F04D29/143 (Especially adapted for elastic fluid pumps) appears on 21 US grants and 13 published applications in this corpus.
Search patents in F04D- Granted patents
- 21
- Published applications
- 13
- Assignees
- 21
- Inventors
- 53
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 3 |
| 2021 | 0 | 0 |
| 2022 | 3 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electric centrifugal compressor8 Sep 2026US 12,729,690 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Compressor arrangement and method of operating a compressor3 Dec 2024US 12,158,159 B2Nuovo Pignone Tecnologie Srl
- Sealing system11 Jul 2023US 11,698,080 B2Ebara Corporation
- Sealing system13 Sep 2022US 11,441,571 B2Ebara Corporation
- Back to back bearing sealing systems5 Apr 2022US 11,293,554 B2Johnson Controls Technology Company
- Sealing system for hvac&r system17 Sep 2026US 2026/0275996 A1Tyco Fire & Security GmbH
- Dry gas seal system5 Feb 2026US 2026/0036207 A1John Crane Inc.
- Electric centrifugal compressor28 Mar 2024US 2024/0102479 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Sealing system1 Dec 2022US 2022/0381258 A1Ebara Corporation
- Compressor arrangement and method of operating a compressor28 Jul 2022US 2022/0235789 A1Nuovo Pignone Tecnologie Srl
Most cited
By later US patents
- Automatic shut down seal control42US 5,772,214 ACarrier Corporation · 1998
- Gas compressor33US 6,607,348 B2Dresser-Rand Company · 2003
- Static sealing mechanism for a compressor11US 4,071,254 AWestinghouse Electric Corp. · 1978
- Method and apparatus for electronically pressure sealing and leak testing an idle centrifugal chiller system11US 4,864,829 AMechanical Ingenuity Corp. · 1989
- Shaft seal assembly, especially for high-pressure turbocompressors11US 5,149,249 AMannesmann Aktiengesellschaft · 1992