F04D 29/122
Especially adapted for elastic fluid pumps
Official title: {especially adapted for elastic fluid pumps}
F04D29/122 (Especially adapted for elastic fluid pumps) appears on 198 US grants and 206 published applications in this corpus.
Search patents in F04D- Granted patents
- 198
- Published applications
- 206
- Assignees
- 113
- Inventors
- 476
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 2 |
| 2002 | 4 | 3 |
| 2003 | 5 | 3 |
| 2004 | 3 | 2 |
| 2005 | 2 | 5 |
| 2006 | 2 | 1 |
| 2007 | 2 | 3 |
| 2008 | 0 | 1 |
| 2009 | 0 | 3 |
| 2010 | 2 | 7 |
| 2011 | 5 | 3 |
| 2012 | 1 | 2 |
| 2013 | 3 | 12 |
| 2014 | 4 | 12 |
| 2015 | 5 | 14 |
| 2016 | 13 | 13 |
| 2017 | 7 | 14 |
| 2018 | 13 | 17 |
| 2019 | 14 | 20 |
| 2020 | 24 | 14 |
| 2021 | 11 | 14 |
| 2022 | 17 | 11 |
| 2023 | 10 | 4 |
| 2024 | 13 | 10 |
| 2025 | 5 | 10 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compressor29 Sep 2026US 12,747,734 B2Mitsubishi Heavy Industries Compressor Corporation
- Compressor with integrated speed multiplier15 Sep 2026US 12,736,057 B2TURBODEN S. p. A.
- Electric centrifugal compressor8 Sep 2026US 12,729,690 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Sealing gas leakage recovery and sealing gas boosting system and method28 Apr 2026US 12,612,922 B2Nuovo Pignone Tecnologie Srl
- Closed-loop cooling fluid circuit for magnetic bearings of an expander-compressor system24 Mar 2026US 12,584,420 B2Nuovo Pignone Tecnologie Srl
- Compressor13 Aug 2026US 2026/0235136 A1Mitsubishi Heavy Industries Compressor Corporation
- Compressor with integrated speed multiplier6 Aug 2026US 2026/0226904 A1TURBODEN S. p. A.
- Connection assembly and fan19 Mar 2026US 2026/0078775 A1Ningbo Singfun Electric Appliance Co., Ltd.
- Seal system5 Feb 2026US 2026/0036203 A1John Crane UK Limited
- Dry gas seal system5 Feb 2026US 2026/0036207 A1John Crane Inc.
Most cited
By later US patents
- Face seal assembly118US 6,325,380 B1Feodor Burgmann Dichtungswerke GmbH & Co. · 2001
- Dry gas seal contamination prevention system84US 6,345,954 B1Flowserve Management Company · 2002
- Turbo machine with an axial dry gas seal65US 5,412,977 ASulzer-Escher Wyss GmbH · 1995
- Seal for a compressor and centrifugal compressor equipped with such a seal62US 6,959,929 B2Thermodyn · 2005
- Multistage centrifugal compressor without seals and with axial thrust balance49US 5,358,378 A1994