Greenfeld; Fred

Patent Applications and Registrations

Patent applications and USPTO patent grants for Greenfeld; Fred.The latest application filed is for "active rectification with current-sense control".

Company Profile

0.7.6

Greenfeld; Fred - Nederland CO

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Current-responsive active rectification for a power supply operable in a discontinuous mode Grant 9,263,963 - Greenfeld February 16, 2	2016-02-16
Active Rectification With Current-sense Control App 20140003104 - GREENFELD; Fred	2014-01-02
LED driver with open loop dimming control Grant 8,344,657 - Zhan , et al. January 1, 2	2013-01-01
Asymmetric zero-voltage switching full-bridge power converters Grant 8,335,091 - Greenfeld December 18, 2	2012-12-18
Asymmetric Zero-voltage Switching Full-bridge Power Converters App 20120008359 - Greenfeld; Fred	2012-01-12
Dc/dc Power Converter Having Active Self Driving Synchronous Rectification App 20110286245 - ZHAN; XIAODONG ; et al.	2011-11-24
Asymmetric zero-voltage switching full-bridge power converters Grant 8,035,996 - Greenfeld October 11, 2	2011-10-11
Method and system for dimming AC-powered light emitting diode (LED) lighting systems using conventional incandescent dimmers Grant 8,022,634 - Greenfeld September 20, 2	2011-09-20
Constant current light emitting diode (LED) driver circuit and method Grant 7,944,153 - Greenfeld May 17, 2	2011-05-17
High frequency connector-less charging scheme Grant 7,876,067 - Greenfeld , et al. January 25, 2	2011-01-25
Method And System For Dimming Ac-powered Light Emitting Diode (led) Lighting Systems Using Conventional Incandescent Dimmers App 20090195168 - Greenfeld; Fred	2009-08-06
Constant current light emitting diode (LED) driver circuit and method App 20080224625 - Greenfeld; Fred	2008-09-18
High Frequency Connector-less Charging Scheme App 20080116846 - GREENFELD; FRED ; et al.	2008-05-22

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