HO

Halvor Oien

YA Yara International Asa: 1 patents #53 of 134Top 40%
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Overall (All Time): #2,397,071 of 4,157,543Top 60%
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Showing 1–1 of 1 patents

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