WS

William C. Schwarzel

PO Polaroid: 2 patents #9 of 118Top 8%
📍 Billerica, MA: #4 of 28 inventorsTop 15%
🗺 Massachusetts: #422 of 4,501 inventorsTop 10%
Overall (1997): #19,865 of 185,788Top 15%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5616449 Lithographic printing plates with dispersed rubber additives Chieh-Min Cheng, Anthony C. Giudice, Rong-Chang Liang, Leonard C. Wan 1997-04-01
5599650 Photoreaction quenchers in on-press developable lithographic printing plates Daoshen Bi, Maurice J. Fitzgerald, Frederick Richard Kearney, Rong-Chang Liang, Tung-Feng Yeh 1997-02-04