H02K 44/18
For generating ac power
Official title: for generating AC power
H02K44/18 (For generating ac power) appears on 16 US grants and 11 published applications in this corpus.
Search patents in H02K- Granted patents
- 16
- Published applications
- 11
- Assignees
- 10
- Inventors
- 23
- Latest grant
- 20 Jun 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 3 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 1 | 2 |
| 2022 | 2 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Thermomagnetic apparatus for electric power generation and method thereof20 Jun 2023US 11,682,959 B2Fondazione Istituto Italiano Di Tecnologia
- Mechanical energy harvesting utilizing liquid rotor homopolar generator19 Jul 2022US 11,394,274 B2
- Power generation device and method using organic working fluid for circulation without pump and valve21 Jun 2022US 11,365,653 B2Xi' An Jiaotong University
- System for generating electrical energy by efficient movement of a specialized inductive medium18 May 2021US 11,011,968 B2
- Ring turbine arrangements for electricity generation and other applications21 Jul 2020US 10,718,228 B2
- Thermomagnetic apparatus for electric power generation and method thereof23 Dec 2021US 2021/0399618 A1Fondazione Istituto Italiano Di Tecnologia
- Power generation device and method using organic working fluid for circulation without pump and valve24 Jun 2021US 2021/0189913 A1Xi' An Jiaotong University
- System for generating electrical energy by efficient movement of a specialized inductive medium2 Jul 2020US 2020/0212788 A1
- Exhaust section for an aircraft gas turbine engine15 Nov 2018US 2018/0328282 A1GE Aviation Systems LLC
- Mechanical energy harvesting utilizing liquid rotor homopolar generator3 May 2018US 2018/0123429 A1
Most cited
By later US patents
- Free piston variable-stroke linear-alternator generator35US 5,850,111 ALockheed Martin Energy Research Corporation · 1998
- Double-duct liquid metal magnetohydrodynamic engine13US 5,473,205 AMartin Marietta Energy Systems, Inc. · 1995
- Double-duct liquid metal magnetohydrodynamic engine12US 5,637,935 AMartin Marietta Energy Systems, Inc. · 1997
- Linear-induction electromagnetic machine with optimized magnetic flux distribution and use10US 5,415,529 AFramatome · 1995
- Single channel double-duct liquid metal electrical generator using a magnetohydrodynamic device8US 5,923,104 ALockheed Martin Energy Research Corporation · 1999