RH

Richard K. Hallmark

SI Sloss Industries: 3 patents #2 of 10Top 20%
JR Jim Walter Resources: 1 patents #5 of 10Top 50%
📍 Largo, FL: #89 of 491 inventorsTop 20%
🗺 Florida: #13,170 of 67,251 inventorsTop 20%
Overall (All Time): #1,303,402 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4873268 Digestion products of polyalkylene terephthalate polymers and polycarboxylic acid-containing polyols and polymeric foams obtained therefrom Michael J. Skowronski, William D. Stephens 1989-10-10
4853419 Distilled products of polyethylene terephthalate polymers and polycarboxylic acid-containing polyols and polymeric foams obtained therefrom Ernest K. Moss 1989-08-01
4758607 Distilled products of polyethylene terephthalate polymers and polycarboxylic acid-containing polyols and polymeric foams obtained therefrom Ernest K. Moss 1988-07-19
4539341 Digestion products of polyalkylene terephthalate polymers and polycarboxylic acid-containing polyols and polymeric foams obtained therefrom Michael J. Skowronski, William D. Stephens 1985-09-03