SF

Semyon D. Friedman

WC W.R. Grace & Co.-Conn.: 2 patents #21 of 188Top 15%
📍 Baltimore, MD: #9 of 189 inventorsTop 5%
🗺 Maryland: #90 of 1,619 inventorsTop 6%
Overall (1994): #20,324 of 165,921Top 15%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5340558 Vermiculite composition with improved thermal expansion properties Robert W. McKinney, Chia-Chih Ou, Robert M. Spotnitz, Shaohai Wu 1994-08-23
5326500 Vermiculite composition with improved chemical exfoliation Robert W. McKinney, Chia-Chih Ou, Robert M. Spotnitz, Shaohai Wu 1994-07-05