DS

David D. Steppan

BH Bayer Healthcare: 3 patents #115 of 933Top 15%
📍 Gibsonia, PA: #2 of 27 inventorsTop 8%
🗺 Pennsylvania: #177 of 4,367 inventorsTop 5%
Overall (1997): #17,106 of 185,788Top 10%
3
Patents 1997

Issued Patents 1997

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
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