RD

Robert Ducharme

MA Maax: 1 patents #3 of 12Top 25%
SO Soprema: 1 patents #12 of 31Top 40%
Overall (All Time): #750,152 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7743572 Anti-vibration sound insulator for suspended ceiling 2010-06-29
7467688 Multi-composite acoustic panel 2008-12-23
6514889 Sound and thermal insulating non-woven synthetic sheet material Richard Théorêt, Alain Poirier 2003-02-04
6264389 Convertible writing instrument 2001-07-24
6243889 Thermo-acoustic insulation system for sanitary device Regis Giguere, Bruno Pimpare 2001-06-12
6213252 Sound absorbing substrate 2001-04-10
5125475 Acoustic construction panel Andre Boisvert, Johanne Zinkewich, Lucie Laroche 1992-06-30