Inventor

Denis Dufournet

Inventor

Bron, FR

Overview

31→

Patents

1982–2014

Patent span

Electricity

Primary field (CPC H)

Patents· 31 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H01Hprimary

H01HElectric switches94%

F16FSprings3%

H02BBoards, substations or switching arrangements for the supply or distribution of electric power3%

PatentTitleYear

8,816,237'Interrupting chamber for high-voltage circuit breaker with improved arc blow-out'2014 8,044,318'Interrupting chamber of a circuit-breaker having two compression volumes'2011 7,964,816'Interrupting chamber having two compression chambers'2011 6,849,819'High-voltage or medium-voltage switch device with combined vacuum and gas breaking'2005 6,744,001'High-voltage circuit-breaker including a valve for decompressing a thermal blast chamber'2004 6,624,371'Circuit-breaker including a channel for emptying the piston-driven compression chamber'2003 6,593,538'High-voltage interrupter device having combined vacuum and gas interruption'2003 6,483,064'Insulating blast nozzle for a circuit breaker'2002 6,472,629'Puffer switch having a two-volume break chamber'2002 6,180,907'Limiter device for a high voltage circuit breaker having a grounded metal tank'2001 5,668,360'Circuit-breaker having two interrupting chambers per pole with drive mechanism and drive rods isolating insert capacitors'1997 5,600,111'Circuit-breaker having low self-compression'1997 5,373,131'Puffer circuit-breaker with two concentric interrupting chambers'1994 5,258,590'Medium- or high-tension circuit breaker having abutting arcing contacts'1993 5,179,257'Medium-voltage gas circuit-breaker'1993 5,162,627'Medium or high tension circuit breaker having abutting arcing contacts'1992 5,160,818'Series-arc high tension circuit-breaker'1992 5,155,313'Medium tension circuit-breaker'1992 5,155,314'Medium or high tension circuit breaker having end-to-end arcing contacts'1992 5,126,516'Puffer-type medium or high tension circuit breaker'1992 5,001,314'High tension circuit-breaker having a dielectric gas under pressure'1991 4,996,398'Medium tension circuit breaking having high nominal current'1991 4,996,399'High or medium tension circuit breaker'1991 4,992,634'Medium tension gas blast circuit breaker'1991 4,983,791'High tension circuit breaker having a dielectric blast gas'1991 4,945,198'High tension circuit breaker with low operating energy'1990 4,945,197'High tension circuit breaker including a dielectric gas used for blasting'1990 4,880,946'High-or medium-tension compressed-gas circuit breaker taking circuit-breaking energy from the arc'1989 4,774,388'Compressed dielectric gas circuit breaker'1988 4,754,109'Compressed dielectric gas high-tension circuit breaker'1988 4,330,103'Earthquake protector'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982Based in Villeurbanne, FR· patent location history

1988Patents assigned to ALSTHOM (2)· patent assignee history

1988–2001Based in Bron, FR· patent location history

1989–1990Patents assigned to ALSTHOM SA (2)· patent assignee history

1990–1993Patents assigned to ALSTHOM GEC (13)· patent assignee history

1994–1997Patents assigned to GEC ALSTHOM T & D SA (3)· patent assignee history

2002–2005Patents assigned to ALSTOM (6)· patent assignee history

2002–2014Based in Sathonay-Camp, FR· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ALSTHOM GEC	13	1990–1993
ALSTOM	6	2002–2005
GEC ALSTHOM T & D SA	3	1994–1997
ALSTHOM	2	1988
ALSTHOM SA	2	1989–1990

Locations

Location	Patents	Span
Bron, FR	21	1988–2001
Sathonay-Camp, FR	9	2002–2014
Villeurbanne, FR	1	1982