JL

John S. Ludwigsen

CI Chicago Bridge & Iron: 3 patents #18 of 129Top 15%
📍 Naperville, IL: #1,065 of 3,051 inventorsTop 35%
🗺 Illinois: #26,653 of 84,256 inventorsTop 35%
Overall (All Time): #1,678,066 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4596120 Apparatus and method for cold aqueous liquid and/or ice production, storage and use for cooling and refrigeration Bryan D. Knodel, Jill L. Ludwigsen, Terry A. Gallagher 1986-06-24
4511115 Passive structure with energy absorbing capacity 1985-04-16
4509344 Apparatus and method of cooling using stored ice slurry Jill L. Ludwigsen, Terry A. Gallagher 1985-04-09