Roger Ledru

Person

Tignieu, FR

People

Patents Grantslast 30 patents

Information Patent Grant
Electric arc-blast nozzle and a circuit breaker including such a no...
- Patent number 10,692,673
- Issue date Jun 23, 2020
- General Electric Technology GmbH
- Roger Ledru
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Circuit breaker containing a gas escape hood with sealable opening
- Patent number 10,262,813
- Issue date Apr 16, 2019
- General Electric Technology GmbH
- Emilien Pierres
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Circuit breaker equipped with an extensible exhaust cover
- Patent number 10,170,256
- Issue date Jan 1, 2019
- General Electric Technology GmbH
- Emilien Pierres
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High voltage circuit breaker with improved gas exhaust
- Patent number 8,530,774
- Issue date Sep 10, 2013
- Areva T&D SA
- Wolfgang Grieshaber
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Relief valve for discharging a dielectric gas between two volumes o...
- Patent number 8,232,497
- Issue date Jul 31, 2012
- Areva T&D SAS
- Cyril Gregoire
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Circuit breaker comprising a control assembly and interrupting cham...
- Patent number 6,987,234
- Issue date Jan 17, 2006
- Alstom
- Roger Ledru
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Ball-locked mechanism for inserting a closure resistor
- Patent number 6,284,993
- Issue date Sep 4, 2001
- Alstom Holdings
- Roger Ledru
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Moisture absorption device for electrical apparatus containing diel...
- Patent number 5,997,616
- Issue date Dec 7, 1999
- GEC Alsthom T&D SA
- Roger Ledru
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gas-blast high-voltage circuit-breaker
- Patent number 5,898,150
- Issue date Apr 27, 1999
- Gec Alsthom & D Sa
- Bernard Gallix
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
AN ELECTRIC ARC-BLAST NOZZLE AND A CIRCUIT BREAKER INCLUDING SUCH A...
- Publication number 20190214207
- Publication date Jul 11, 2019
- General Electric Technology GmbH
- Roger Ledru
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CIRCUIT BREAKER CONTAINING A GAS ESCAPE HOOD WITH SEALABLE OPENING
- Publication number 20180261406
- Publication date Sep 13, 2018
- General Electric Technology GmbH
- Emilien Pierres
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CIRCUIT BREAKER EQUIPPED WITH AN EXTENSIBLE EXHAUST COVER
- Publication number 20180012715
- Publication date Jan 11, 2018
- General Electric Technology GmbH
- Emilien Pierres
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
RELIEF VALVE FOR DISCHARGING A DIELECTRIC GAS BETWEEN TWO VOLUMES O...
- Publication number 20100326958
- Publication date Dec 30, 2010
- AREVA T&D SAS
- Cyril Gregoire
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
HIGH VOLTAGE CIRCUIT BREAKER WITH IMPROVED GAS EXHAUST
- Publication number 20090134123
- Publication date May 28, 2009
- AREVA T&D SA
- Wolfgang GRIESHABER
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Circuit-breaker comprising a control assembly and an interrupting c...
- Publication number 20040216991
- Publication date Nov 4, 2004
- Roger Ledru
- H01 - BASIC ELECTRIC ELEMENTS

Roger Ledru

Person

Patents Grantslast 30 patents

Electric arc-blast nozzle and a circuit breaker including such a no...

Circuit breaker containing a gas escape hood with sealable opening

Circuit breaker equipped with an extensible exhaust cover

High voltage circuit breaker with improved gas exhaust

Relief valve for discharging a dielectric gas between two volumes o...

Circuit breaker comprising a control assembly and interrupting cham...

Ball-locked mechanism for inserting a closure resistor

Moisture absorption device for electrical apparatus containing diel...

Gas-blast high-voltage circuit-breaker

Patents Applicationslast 30 patents

AN ELECTRIC ARC-BLAST NOZZLE AND A CIRCUIT BREAKER INCLUDING SUCH A...

CIRCUIT BREAKER CONTAINING A GAS ESCAPE HOOD WITH SEALABLE OPENING

CIRCUIT BREAKER EQUIPPED WITH AN EXTENSIBLE EXHAUST COVER

RELIEF VALVE FOR DISCHARGING A DIELECTRIC GAS BETWEEN TWO VOLUMES O...

HIGH VOLTAGE CIRCUIT BREAKER WITH IMPROVED GAS EXHAUST

Circuit-breaker comprising a control assembly and an interrupting c...