F04C 2230/101
By electrochemical methods
Official title: by electrochemical methods
F04C2230/101 (By electrochemical methods) appears on 9 US grants and 10 published applications in this corpus.
Search patents in F04C- Granted patents
- 9
- Published applications
- 10
- Assignees
- 11
- Inventors
- 24
- Latest grant
- 4 Jun 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus to manufacture a progressive cavity motor or pump4 Jun 2019US 10,309,395 B2Smith International, Inc.
- Electrochemical machining method for rotors or stators for moineau pumps22 May 2018US 9,976,227 B2Baker Hughes, A Ge Company, LLC
- Electroformed stator tube for a progressing cavity apparatus16 Aug 2016US 9,416,780 B2Halliburton Energy Services.Inc.
- Undercut stator for a positive displacment motor19 Jul 2016US 9,393,648 B2Smith International, Inc.
- Electroformed stator tube for a progressing cavity apparatus28 Jan 2014US 8,636,485 B2Halliburton Energy Services.Inc.
- Broaching and/or friction welding techniques to form undercut pdm stators8 Mar 2018US 2018/0066654 A1Basintek, LLC
- Method and Apparatus to Manufacture a Progressive Cavity Motor or Pump30 Jun 2016US 2016/0186747 A1Smith International, Inc.
- Electrochemical Machining Method for Rotors or Stators for Moineau Pumps19 Nov 2015US 2015/0329987 A1Baker Hughes Incorporated
- Electroformed stator tube for a progressing cavity apparatus26 Jun 2014US 2014/0178235 A1Halliburton Energy Services.Inc.
- Undercut stator for a positive displacment motor6 Oct 2011US 2011/0243774 A1Smith International, Inc.
Most cited
By later US patents
- Progressive cavity pump/motor stator, and apparatus and method to manufacture same by electrochemical machining30US 7,192,260 B2Lehr Precision, Inc. · 2007
- Electrochemical machining of scroll wraps16US 5,320,505 ATecumseh Products Company · 1994
- Electroformed stator tube for a progressing cavity apparatus13US 8,636,485 B2Halliburton Energy Services.Inc. · 2014
- Electroformed stator tube for a progressing cavity apparatus6US 9,416,780 B2Halliburton Energy Services.Inc. · 2016
- Undercut stator for a positive displacment motor4US 9,393,648 B2Smith International, Inc. · 2016