FJ

Frank J. Hrach, Jr.

CA Cabot: 1 patents #4 of 16Top 25%
📍 Parma, OH: #7 of 31 inventorsTop 25%
🗺 Ohio: #979 of 4,093 inventorsTop 25%
Overall (1994): #135,835 of 165,921Top 85%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5352289 Low ash carbon blacks Daniel W. Weaver, Chung-Huei Shieh, William L. Sifleet, Jay J. Zimmer 1994-10-04