DS

David J. Sparrow

IC ICI: 3 patents #456 of 2,189Top 25%
CL Coal Industry (Patents) Limited: 1 patents #73 of 230Top 35%
Overall (All Time): #1,303,341 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4849460 Process for preparing polyurea and polyurea/polyurethane polymers from polymeric polyamine James M. Bentley, James P. Brown, Guy Frijns 1989-07-18
4751255 Polymeric polyamines James M. Bentley, James P. Brown, Guy Frijns 1988-06-14
4590226 Polyether polyols containing hydroxymethyl substituted 1,3-dioxane for use in polyurethanes James P. Brown, William G. Carroll, Ronald N. May, Erik M. B. Merckx 1986-05-20
4408886 Mixing equipment John D. Sampson 1983-10-11