DM

David Edward Maddison

DU Duracell: 3 patents #52 of 239Top 25%
FO Fortemedia: 1 patents #50 of 97Top 55%
LB Lever Brothers: 1 patents #333 of 819Top 45%
KW Kimberly-Clark Worldwide: 1 patents #564 of 1,047Top 55%
Overall (All Time): #747,262 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8328733 Urine collection device Vincent Forte 2012-12-11
7819821 Urine collection device Vincent Forte 2010-10-26
D299173 Flashlight David Hillary Powell, Richard Seymour, Veronica G. Steel 1988-12-27
D296478 Flashlight David Hillary Powell, Richard Seymour, Veronica G. Steel 1988-06-28
D296477 Flashlight David Hillary Powell, Richard Seymour, Veronica G. Steel 1988-06-28
D289480 Module for liquid detergent pump and control components Wilhelmus K. der Kinderen, Veronica G. Steel 1987-04-28
4573612 Liquid soap dispenser Christopher Dawson 1986-03-04