WJ

William Robert Selkirk, Jr.

📍 Cambridge City, IN: #1 of 2 inventorsTop 50%
🗺 Indiana: #324 of 2,804 inventorsTop 15%
Overall (2025): #76,382 of 469,880Top 20%
2
Patents 2025

Issued Patents 2025

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12384731 Black nitrogen—a milk-based fertilizer composition with a soluble coal dust ingredient Rebecca Sue Selkirk, Michael Brown, Jennifer Xiaoyu Xu Brown 2025-08-12
12319631 Black nitrogen—a milk-based fertilizer composition with coal dust Rebecca Sue Selkirk 2025-06-03