F04D 29/057
Hydrostatic
Official title: hydrostatic; hydrodynamic
F04D29/057 (Hydrostatic) appears on 381 US grants and 468 published applications in this corpus.
Search patents in F04D- Granted patents
- 381
- Published applications
- 468
- Assignees
- 223
- Inventors
- 864
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 8 | 0 |
| 2002 | 10 | 7 |
| 2003 | 5 | 7 |
| 2004 | 6 | 14 |
| 2005 | 7 | 17 |
| 2006 | 8 | 12 |
| 2007 | 7 | 13 |
| 2008 | 3 | 15 |
| 2009 | 6 | 15 |
| 2010 | 8 | 9 |
| 2011 | 7 | 17 |
| 2012 | 4 | 15 |
| 2013 | 13 | 29 |
| 2014 | 11 | 23 |
| 2015 | 13 | 30 |
| 2016 | 19 | 17 |
| 2017 | 20 | 17 |
| 2018 | 23 | 25 |
| 2019 | 22 | 28 |
| 2020 | 23 | 32 |
| 2021 | 19 | 22 |
| 2022 | 28 | 26 |
| 2023 | 26 | 23 |
| 2024 | 22 | 22 |
| 2025 | 21 | 23 |
| 2026 | 10 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Turbo compressor8 Sep 2026US 12,729,691 B2LG Electronics Inc.
- Cooling of a compressor shaft gas bearing1 Sep 2026US 12,723,592 B2Trane International Inc.
- Static gas thrust bearing18 Aug 2026US 12,710,050 B2Garrett Transportation I Inc.
- Cooling circuits for compressors and compressors including same11 Aug 2026US 12,704,132 B2Copeland Corporation
- Electric motor-integrated rocket engine pump21 Jul 2026US 12,687,169 B2Industry-University Cooperation Foundation Hanyang University Erica Campus
- Compressor assembly1 Oct 2026US 2026/0298254 A1Siemens Energy Global GmbH & Co. KG
- Radial compressor with radial bearing and radial seal1 Oct 2026US 2026/0298255 A1ebm-papst Mulfingen GmbH & Co. KGaA & Co. KG
- Blower13 Aug 2026US 2026/0235135 A1Panasonic Intellectual Property Management Co., Ltd.
- Bearing system for hvac&r system6 Aug 2026US 2026/0227102 A1Tyco Fire & Security GmbH
- Edm leading edge groove bearing30 Jul 2026US 2026/0218718 A1
Most cited
By later US patents
- Compressor149US 5,857,348 AMultistack International Limited · 1999
- Method for preventing collision of two mutually movable bodies and an apparatus including an arrangement for preventing collision109US 4,578,757 AU. S. Philips Corporation · 1986
- Thermal control system for gas-bearing turbocompressors72US 6,231,302 B12001
- Assembly structure for a turbo compressor65US 6,471,493 B2LG Electronics Inc. · 2002
- Integral motor and air bearing cooling path54US 7,394,175 B2Hamilton Sundstrand Corporation · 2008