HO

Halvor Oien

YA Yara International Asa: 1 patents #2 of 20Top 10%
📍 Porsgrunn, NO: #3 of 11 inventorsTop 30%
Overall (2025): #374,053 of 469,880Top 80%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12252399 Bleaching tower and method for nitric acid production Arnulf Idar Melgard 2025-03-18