JK

John A. Karch

AR Atlantic Richfield: 1 patents #23 of 75Top 35%
📍 Chicago, IL: #69 of 289 inventorsTop 25%
🗺 Illinois: #566 of 2,749 inventorsTop 25%
Overall (1982): #52,625 of 81,411Top 65%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4317713 In situ aluminum passivation process Emmett H. Burk, Jr., Jin S. Yoo 1982-03-02