DS

Donald A. Irwin, Sr.

DE Darwin Enterprises: 5 patents #1 of 2Top 50%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #1,030,008 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7364634 Carpet construction having secondary backing 2008-04-29
6479125 Backing for tufted carpet that imparts dimensional stability 2002-11-12
6475592 Carpet backing that provides dimensional stability 2002-11-05
5962101 Dimensionally stable tufted carpet Steve Linville 1999-10-05
5612113 Carpet with fluid barrier 1997-03-18