HD

Howard S. Duff

BH Bayer Healthcare: 2 patents #3,312 of 8,007Top 45%
BA Bayer Materialscience Ag: 1 patents #483 of 1,035Top 50%
MI Miles: 1 patents #258 of 626Top 45%
📍 Pittsburgh, PA: #1,996 of 7,570 inventorsTop 30%
🗺 Pennsylvania: #19,182 of 74,527 inventorsTop 30%
Overall (All Time): #1,254,531 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7199168 Process for making cellular composites using polymeric isocyanates as binders for hollow filler particles Kieth G. Spitler, David D. Steppan 2007-04-03
6066284 Process for the production of engineered products in which curing of the wood is monitored ultrasonically and apparatus useful therefor Robert N. Hunt, Terry L. Thiem, Timothy S. McCracken 2000-05-23
5674568 Treatment of cellulosic fiber products Heber D. Layton, John W. Frink, Karl W. Haider 1997-10-07
5128407 Urea extended polyisocyanates Heber D. Layton, Kevin R. Molyneaux 1992-07-07