DS

David D. Steppan

BH Bayer Healthcare: 19 patents #508 of 8,007Top 7%
CO Covestro: 17 patents #4 of 276Top 2%
MI Miles: 4 patents #57 of 626Top 10%
BA Bayer Materialscience Ag: 2 patents #297 of 1,035Top 30%
📍 Gibsonia, PA: #15 of 383 inventorsTop 4%
🗺 Pennsylvania: #1,002 of 74,527 inventorsTop 2%
Overall (All Time): #73,155 of 4,157,543Top 2%
42
Patents All Time

Issued Patents All Time

Showing 26–42 of 42 patents

Patent #TitleCo-InventorsDate
5973099 Polyurethane resin transfer molding systems Neil H. Nodelman, Sanjeev Madan 1999-10-26
5847014 Water blown, energy absorbing foams Neil H. Nodelman, Mark A. Davolio, David F. Sounik, Alan D. Bushmire 1998-12-08
5801210 Method and apparatus for the production of essentially void free foams David A. Radovich, Keith G. Spitler, James D. Shoup 1998-09-01
5739253 RIM elastomers based on prepolymers of cycloaliphatic diisocyanates Neil H. Nodelman 1998-04-14
5714565 Heat resistant structural rim product Neil H. Nodelman 1998-02-03
5710230 Cycloaliphatic diisocyanate based rim elastomers Neil H. Nodelman, Eduard Mayer, A. Donald Meltzer, Albert Magnotta 1998-01-20
5686042 Rim process using liquid methylene diphenyl diisocyanate William E. Slack, Hersel T. Kemp, II 1997-11-11
5668239 High modulus, high impact polyurethane/polyurea RIM Neil H. Nodelman, Jan L. R. Clatty, A. Donald Meltzer 1997-09-16
5663272 Allophanate-modified diphenylmethane diisocyanates and processes for their production and use William E. Slack, Edmund J. Madaj 1997-09-02
5567793 Urethane-free, diphenylmethane diisocyanate prepolymers and process for their production William E. Slack 1996-10-22
5502147 Aliphatic rim elastomers Neil H. Nodelman, Albert Magnotta, Robert M. Loring, Richard E. Keegan, William E. Slack 1996-03-26
5502150 Linear HDI urethane prepolymers for rim application Ronald A. Cageao, Neil H. Nodelman, William E. Slack, Frank Sanns, Jr. 1996-03-26
5473044 HDI residue in reaction injection molding Robson Mafoti 1995-12-05
5350778 Polyisocyanate based upon 4,4'- and 2,4'-diphenylmethane diisocyanates and use thereof in a rim process William E. Slack, Charles G. Beckley 1994-09-27
5324773 Stabilization of RIM systems containing acidic additives Robson Mafoti, Michael Hurley, Albert Magnotta 1994-06-28
5277862 Resin transfer molding process Robson Mafoti 1994-01-11
5198522 Reaction injection molding based on diethyl methylene diphenyl diisocyanate Robson Mafoti, William E. Slack 1993-03-30