H02K 44/04
Conduction pumps
H02K44/04 (Conduction pumps) appears on 71 US grants and 47 published applications in this corpus.
Search patents in H02K- Granted patents
- 71
- Published applications
- 47
- Assignees
- 56
- Inventors
- 156
- Latest grant
- 22 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 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 3 |
| 2011 | 0 | 4 |
| 2012 | 2 | 2 |
| 2013 | 2 | 1 |
| 2014 | 3 | 2 |
| 2015 | 0 | 2 |
| 2016 | 2 | 0 |
| 2017 | 2 | 2 |
| 2018 | 1 | 1 |
| 2019 | 1 | 4 |
| 2020 | 1 | 2 |
| 2021 | 1 | 3 |
| 2022 | 4 | 2 |
| 2023 | 3 | 2 |
| 2024 | 2 | 0 |
| 2025 | 2 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Conductive liquid pumping system22 Sep 2026US 12,744,443 B2Blue Origin Manufacturing, LLC
- Utilization of interconnections in electronic circuits as magnetohydrodynamic pumps for liquid metal based cooling9 Dec 2025US 12,495,522 B2Ohio State Innovation Foundation
- Magneto-hydrodynamic (MHD) connection pump and a downhole tubing connection system using the same14 Oct 2025US 12,445,030 B2Saudi Arabian Oil Company
- Encapsulated magneto hydrodynamic drive25 Jun 2024US 12,017,743 B1Hyalta Aeronautics, Inc.
- Devices and methods for clearing and molecular labeling of intact tissues2 Jan 2024US 11,863,041 B2University of Massachusetts
- Cooling system for electromagnetic pump system24 Sep 2026US 2026/0291358 A1Nano Nuclear Energy Inc.
- Miniature dc electromagnetic pumps of heavy and alkali liquid metals at up to 500 °c for nuclear and industrial applications27 Aug 2026US 2026/0254336 A1UNM Rainforest Innovations
- Conductive liquid pumping system18 Jun 2026US 2026/0171881 A1Blue Origin Manufacturing, LLC
- Reversible cooling loop using magnetohydrodynamic pump for systems with variable heat distribution9 Apr 2026US 2026/0100628 A1L3Harris Technologies, Inc.
- Electric machine with integrated electromagnetic pumping scheme for direct cooled windings4 Sep 2025US 2025/0279698 A1GE Infrastructure Technology LLC
Most cited
By later US patents
- Micromachined magnetohydrodynamic actuators and sensors169US 6,146,103 AThe Regents of the University of California · 2000
- Non-mechanical magnetic pump for liquid cooling125US 5,763,951 ANorthrop Grumman Corporation · 1998
- Cooling of high power density devices by electrically conducting fluids69US 6,658,861 B1NanoCoolers, Inc. · 2003
- Method for driving liquid, and method and apparatus for mixing and agitation employing the method61US 5,788,819 ACanon Kabushiki Kaisha · 1998
- Method of fabricating complex microcircuit boards, substrates and microcircuits and the substrates and microcircuits40US 4,994,215 AFine Particle Technology Corp. · 1991