Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Châteaudun, FR ranks #10,757 worldwide for total patents filed all time, with 180 patents from 49 inventors. Leading employers of inventors based in Châteaudun, FR include Synthelabo, Hutchinson, Connecteurs Electriques Deutsch.

Showing 1–49 of 49 inventors

Rank Inventor Primary Company Patents
1 Jacques Froissant Synthelabo 28
2 Andre Gennesseaux Hutchinson 18
3 Denis Reh Hutchinson 12
#4 Francois Bodin Hutchinson 8
#4 Jean-Luc Gastineau Hutchinson 8
#6 Pierre Jouade Hutchinson 7
#6 Jean-Luc Moreau Connecteurs Electriques Deutsch 7
#8 Gabriel Lemaire Hutchinson 6
#9 Jean-Pierre Bretaudeau Hutchinson 5
#9 Jean Thelamon Hutchinson 5
#9 Jean-Louis Ray Hutchinson 5
#12 Sebastien Durand Gaztransport Et Technigaz 4
#12 Michael Manceau Thales 4
#12 Jean-Pierre Monneau Hutchinson 4
#15 Jean Lor Hutchinson 3
#15 Mikaël Thomazeau Hutchinson 3
#15 Gilles Sauvat Hutchinson 3
#15 Jacques Dandre Hutchinson 3
#15 Thierry Pizanti Hutchinson 3
#15 Gilles Chenais Hutchinson 3
#15 Joel Menager Hutchinson 3
#22 Erwan Henri Dupont Nutrition Biosciences Aps 2
#22 Pierre Allaire Hutchinson 2
#22 Mickael Desmoulins Hutchinson 2
#22 Daniel Le Guillant Hutchinson 2
#22 Nicolas Michot Bertrand Faure Equipment Sa 2
#22 Loic Collet Hutchinson 2
#22 Raphael Lame 2
#22 Khalid Aazizou Hutchinson 2
#22 Herve Visage Hutchinson 2
#22 Jérôme Valliere Valeo Systemes D'Essuyage 2
#32 Regis Chaon Compagnie Plastic Omnium Se 1
#32 Jean-Pierre Chasles Hutchinson 1
#32 Jean-Pierre Maria Developmental Industries 1
#32 Marcel P. Gris 1
#32 Raymond Batrol L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude 1
#32 Jacques Taniere Hutchinson 1
#32 Francois Hourlier Hutchinson 1
#32 Jaroslav Hlavinka 1
#32 Patrick Philippeau Hutchinson 1
#32 Eric Seminatore Hutchinson 1
#32 Emmanuel Blanchet Hutchinson 1
#32 Corinne Grenet 1
#32 Olivier Godard Valeo Systemes D'Essuyage 1
#32 Pascal Conteaux IBM 1
#32 Christophe Jules Hutchinson 1
#32 Patrick Garaud Hutchinson 1
#32 Jacques Molet Hutchinson 1
#32 Alexandre Oberle Hutchinson 1