Dohnal; Dieter
Patent Applications and Registrations
Patent applications and USPTO patent grants for Dohnal; Dieter.The latest application filed is for "on-load tap changer".
Company Profile
0.33.38
- Dohnal; Dieter - Lappersdorf DE
- DOHNAL; Dieter - Lapersdorf DE
- Dohnal; Dieter - Lappersodrf DE
Patent Activity
| Patent | Date |
|---|---|
| Device and method for reducing network reactions when an electric arc furnace is in operation Grant 9,918,359 - Krueger , et al. March 13, 2 | 2018-03-13 |
| On-load tap changer Grant 9,640,341 - Hoepfl , et al. May 2, 2 | 2017-05-02 |
| On-load Tap Changer App 20160181025 - HOEPFL; Klaus ; et al. | 2016-06-23 |
| Control transformer Grant 9,275,788 - Von Bloh , et al. March 1, 2 | 2016-03-01 |
| On-load Tap Changer With Connection To Oil Reservoir Of A Transformer App 20150325387 - DOHNAL; Dieter ; et al. | 2015-11-12 |
| Tap changer and vacuum switching tube for such a tap changer Grant 9,165,726 - Dohnal , et al. October 20, 2 | 2015-10-20 |
| Device And Method For The Process-based Power Control Of An Electric Arc Furnace App 20150271879 - Krueger; Klaus ; et al. | 2015-09-24 |
| Transformer with on-load tap changer Grant 9,123,464 - Von Bloh , et al. September 1, 2 | 2015-09-01 |
| Device And Method For Controlling An Electric Arc Furnace In The Initial Phase Of A Melting Process App 20150215998 - Krueger; Klaus ; et al. | 2015-07-30 |
| Device And Method For Reducing Network Reactions When An Electric Arc Furnace Is In Operation App 20150215997 - Krueger; Klaus ; et al. | 2015-07-30 |
| On-load tap changer Grant 9,054,522 - Dohnal June 9, 2 | 2015-06-09 |
| Control Transformer App 20150022303 - Von Bloh; Jochen ; et al. | 2015-01-22 |
| Transformer With On-load Tap Changer App 20140375407 - Von Bloh; Jochen ; et al. | 2014-12-25 |
| Tap Changer App 20140354390 - Engel; Stefan ; et al. | 2014-12-04 |
| Tap Changer App 20140197816 - Von Bloh; Jochen ; et al. | 2014-07-17 |
| On-load tap changer comprising semiconductor switching elements Grant 8,669,746 - Brueckl , et al. March 11, 2 | 2014-03-11 |
| Arrangement of a stepping switch on a control transformer Grant 8,648,587 - Brueckl , et al. February 11, 2 | 2014-02-11 |
| On-load tap changer comprising semiconductor switching elements Grant 8,624,565 - Brueckl , et al. January 7, 2 | 2014-01-07 |
| Tap Changer App 20130249528 - Biskoping; Matthias ; et al. | 2013-09-26 |
| Tap Changer And Vacuum Switching Tube For Such A Tap Changer App 20130220782 - Dohnal; Dieter ; et al. | 2013-08-29 |
| Tap Changer App 20130213777 - Dohnal; Dieter ; et al. | 2013-08-22 |
| On-load Tap Changer App 20130170079 - Dohnal; Dieter | 2013-07-04 |
| Tap switch with semiconductor switching elements Grant 8,415,987 - Brueckl , et al. April 9, 2 | 2013-04-09 |
| Method for switching without any interruption between winding taps on a tap-changing transformer Grant 8,289,068 - Brueckl , et al. October 16, 2 | 2012-10-16 |
| Arrangement Of A Stepping Switch On A Control Transformer App 20120112730 - Brueckl; Oliver ; et al. | 2012-05-10 |
| On-load Tap Changer Comprising Semiconductor Switching Elements App 20120032654 - Brueckl; Oliver ; et al. | 2012-02-09 |
| On-load Tap Changer Comprising Semiconductor Switching Elements App 20120025789 - Brueckl; Oliver ; et al. | 2012-02-02 |
| Tap Switch With Semiconductor Switching Elements App 20110133817 - Brueckl; Oliver ; et al. | 2011-06-09 |
| Method For Switching Without Any Interruption Between Winding Taps On A Tap-changing Transformer App 20110102056 - Brueckl; Oliver ; et al. | 2011-05-05 |
| Power Transformer Having A Stepping Switch App 20110063064 - Albrecht; Wolfgang ; et al. | 2011-03-17 |
| Device for regulating electrical voltage Grant 7,656,138 - Dohnal February 2, 2 | 2010-02-02 |
| Tap changer having a switching monitoring device Grant 7,550,688 - Baertl , et al. June 23, 2 | 2009-06-23 |
| Device for Regulating Electrical Voltage App 20090140705 - Dohnal; Dieter | 2009-06-04 |
| Contact arrangement Grant 7,497,745 - Baertl , et al. March 3, 2 | 2009-03-03 |
| Method for dehumidifying air and air dehumidifier for oil-insulated transformers, reactance coils and step switches Grant 7,468,091 - Viereck , et al. December 23, 2 | 2008-12-23 |
| Tap Changer Having a Switching Monitoring Device App 20080302639 - Baertl; Reinhold ; et al. | 2008-12-11 |
| Multipoint switch Grant 7,463,010 - Dohnal , et al. December 9, 2 | 2008-12-09 |
| Arrangement for automatically influencing a mains supply and motor drive therefor Grant 7,449,851 - Dohnal , et al. November 11, 2 | 2008-11-11 |
| Contact Arrangement App 20080248700 - Baertl; Reinhold ; et al. | 2008-10-09 |
| Method For Dehumidifying Air And Air Dehumidifier For Oil-Insulated Transformers, Reactance Coils And Step Switches App 20070199443 - Viereck; Karsten ; et al. | 2007-08-30 |
| Method for monitoring contact consumption in multiple contact switches App 20070051595 - Dohnal; Dieter ; et al. | 2007-03-08 |
| Oil filter system Grant 7,179,369 - Dohnal , et al. February 20, 2 | 2007-02-20 |
| Multipoint switch App 20060244431 - Dohnal; Dieter ; et al. | 2006-11-02 |
| Tap changing assembly for power transformer Grant 6,965,217 - Dohnal , et al. November 15, 2 | 2005-11-15 |
| Thyristor tap changer Grant 6,856,122 - Dohnal , et al. February 15, 2 | 2005-02-15 |
| Oil filter system App 20040238419 - Dohnal, Dieter ; et al. | 2004-12-02 |
| Tap changing assembly for power transformer App 20040196010 - Dohnal, Dieter ; et al. | 2004-10-07 |
| Arrangement for automatically influencing a mains supply and motor drive for said arrangement App 20040070359 - Dohnal, Dieter ; et al. | 2004-04-15 |
| Thyristor tap changer App 20040032699 - Dohnal, Dieter ; et al. | 2004-02-19 |
| Method of monitoring the contact burnoff in tap changers Grant 6,518,771 - Frotscher , et al. February 11, 2 | 2003-02-11 |
| Method of monitoring the contact burnoff in tap changers App 20010013784 - Frotscher, Rainer ; et al. | 2001-08-16 |
| Method of monitoring a tap selector Grant 6,124,726 - Dohnal , et al. September 26, 2 | 2000-09-26 |
| Method of monitoring a tap changer Grant 6,100,674 - Dohnal , et al. August 8, 2 | 2000-08-08 |
| Switching arrangement for load change-over switches of step switches and for selector switches Grant 5,786,552 - Dohnal , et al. July 28, 1 | 1998-07-28 |
| Tap changer for a tapped or stepped transformer Grant 5,694,034 - Dohnal , et al. December 2, 1 | 1997-12-02 |
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