DR

David Rowntree

BD Black & Decker: 12 patents #274 of 2,138Top 15%
DL Domnick Hunter Limited: 2 patents #8 of 20Top 40%
Overall (All Time): #348,345 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10092147 Vacuum cleaning device 2018-10-09
9962046 Vacuum cleaning appliance 2018-05-08
9861241 Vacuum cleaning device 2018-01-09
9717390 Steam cleaning apparatus Barry Pears, Martyn Riley, Stephen Houghton, Andrew Walker 2017-08-01
9039844 Steam cleaning apparatus Barry Pears, Martyn Riley, Stephen Houghton, Andrew Walker 2015-05-26
8918952 Vacuum cleaner 2014-12-30
RE43804 Hand-holdable vacuum cleaners Andrew Walker, Eric Coburn 2012-11-20
8123916 Apparatus for generating gas by electrolysis of a liquid Craig Stuart Blenkiron, Keith James Blundy 2012-02-28
8101877 Rotating dual switching mechanism 2012-01-24
RE42873 Hand-holdable vacuum cleaners Andrew Walker, Eric Coburn 2011-11-01
8032984 Vacuum cleaner filter cleaning mechanisms Barry Pears 2011-10-11
8028373 Vacuum cleaners 2011-10-04
7638021 Apparatus for generating gas by electrolysis of a liquid Craig Stuart Blenkiron, Keith James Blundy 2009-12-29
7370387 Hand-holdable vacuum cleaners Andrew Walker, Eric Coburn 2008-05-13