DH

David Hartwich

HH Harbisonwalker International Holdings: 1 patents #1 of 3Top 35%
📍 Bethel Park, PA: #6 of 18 inventorsTop 35%
🗺 Pennsylvania: #1,810 of 6,113 inventorsTop 30%
Overall (2025): #413,036 of 469,880Top 90%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12263487 Refractory lining design for magnetic separation Joshua Sayre 2025-04-01