F04D 29/06
Lubrication
Official title: Lubrication {(F04D13/0606, F04D13/0646, F04D13/0653 take precedence)}
F04D29/06 (Lubrication) appears on 685 US grants and 699 published applications in this corpus.
Search patents in F04D- Granted patents
- 685
- Published applications
- 699
- Assignees
- 370
- Inventors
- 1,555
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 9 | 0 |
| 1993 | 11 | 0 |
| 1994 | 13 | 0 |
| 1995 | 11 | 0 |
| 1996 | 8 | 0 |
| 1997 | 11 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 12 | 0 |
| 2001 | 12 | 2 |
| 2002 | 8 | 10 |
| 2003 | 11 | 12 |
| 2004 | 9 | 12 |
| 2005 | 13 | 17 |
| 2006 | 3 | 13 |
| 2007 | 5 | 11 |
| 2008 | 8 | 14 |
| 2009 | 4 | 12 |
| 2010 | 6 | 13 |
| 2011 | 5 | 22 |
| 2012 | 12 | 12 |
| 2013 | 5 | 30 |
| 2014 | 13 | 33 |
| 2015 | 19 | 42 |
| 2016 | 29 | 50 |
| 2017 | 29 | 54 |
| 2018 | 40 | 55 |
| 2019 | 55 | 50 |
| 2020 | 60 | 42 |
| 2021 | 38 | 55 |
| 2022 | 45 | 36 |
| 2023 | 30 | 32 |
| 2024 | 49 | 28 |
| 2025 | 28 | 18 |
| 2026 | 20 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compressor with integrated speed multiplier15 Sep 2026US 12,736,057 B2TURBODEN S. p. A.
- Split thrust chamber for downhole pump25 Aug 2026US 12,716,417 B2Halliburton Energy Services.Inc.
- Vacuum pump11 Aug 2026US 12,704,127 B2Milwaukee Electric Tool Corporation
- Fan shaft structure7 Jul 2026US 12,674,465 B2Global WIN Technology Co., Ltd.
- System ADN method for monitoring the oil level of an oil-lubricated compressor16 Jun 2026US 12,655,833 B2Knorr-Bremse Systeme FüR Schienenfahrzeuge GmbH
- Rotor for a fluid pump, and method and mold for manufacturing same24 Sep 2026US 2026/0286968 A1Ecp Entwicklungsgesellschaft Mbh
- Oil tank for a turbomachine with a lower compartment having an oil outlet duct that is negative-g-compatible20 Aug 2026US 2026/0243173 A1Safran Aero Boosters SA
- Oil distribution system for multiple-compressor systems20 Aug 2026US 2026/0243242 A1
- Blower13 Aug 2026US 2026/0235135 A1Panasonic Intellectual Property Management Co., Ltd.
- Uninterruptible power supply for hvac&r system13 Aug 2026US 2026/0238036 A1Tyco Fire & Security GmbH
Most cited
By later US patents
- Cardiac assist pump with steady rate supply of fluid lubricant443US 4,927,407 ARegents of the University of Minnesota · 1990
- Environmentally safe pump including seal93US 5,499,902 AEnvironamics Corporation · 1996
- Magnetically coupled centrifugal pump with improved casting and lubrication67US 5,248,245 AIngersoll-Dresser Pump Company · 1993
- Vertical type antifriction bearing device61US 4,037,890 AHitachi, Ltd. · 1977
- Liquid chiller with enhanced motor cooling and lubrication60US 6,065,297 AAmerican Standard Inc. · 2000