Roger Ledru — 10 Patents at GE

Roger Ledru has been granted 10 US patents while listed as an inventor at GE. The first was granted in 1990 and the most recent in June 2020. Roger Ledru ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Roger Ledru in Tignieu, FR.

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
10692673	Electric arc-blast nozzle and a circuit breaker including such a nozzle	Daniel Vigouroux	2020-06-23	$11,069,000
10262813	Circuit breaker containing a gas escape hood with sealable opening	Emilien Pierres, Nicolas Toquet, Jean-Baptiste Jourjon, Laurent Boget	2019-04-16	$13,481,000
10170256	Circuit breaker equipped with an extensible exhaust cover	Emilien Pierres, Nicolas Toquet	2019-01-01
8530774	High voltage circuit breaker with improved gas exhaust	Wolfgang Grieshaber, Steven G. Grosick, Nicklas Davison	2013-09-10
8232497	Relief valve for discharging a dielectric gas between two volumes of a high-voltage or medium-voltage interrupting chamber	Cyril Gregoire, Wolfgang Grieshaber	2012-07-31
6987234	Circuit breaker comprising a control assembly and interrupting chamber and method of assembly	Wolfgang Grieshaber	2006-01-17
6284993	Ball-locked mechanism for inserting a closure resistor	—	2001-09-04	$1,376,000
5997616	Moisture absorption device for electrical apparatus containing dielectric gas	Antoine Tolossi	1999-12-07
5898150	Gas-blast high-voltage circuit-breaker	Bernard Gallix, Antoine Tolossi	1999-04-27
4940961	Braking resistor for a high tension electrical network	Edmond Thuries, Van Doan Pham	1990-07-10

Roger Ledru — 10 Patents

Issued Patents All Time

Patent Widget