Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11301314 | Methods and systems for collaborative evidence-based problem investigation and resolution | Julie Basu, Rishi Mukhopadhyay, June Mukherjee | 2022-04-12 |
| 7748555 | Spring-loaded secondary seal for floating-roof storage tank | John Owens | 2010-07-06 |
| 7044322 | Spring-loaded secondary seal for floating-roof storage tank | John Owens, Roger J. Orner | 2006-05-16 |
| 6354488 | Secondary seal for floating roof storage tank | — | 2002-03-12 |
| 5667091 | Mounting system for floating roof seals | Arthur W. Slaber, Jr. | 1997-09-16 |
| 4596120 | Apparatus and method for cold aqueous liquid and/or ice production, storage and use for cooling and refrigeration | Bryan D. Knodel, John S. Ludwigsen, Jill L. Ludwigsen | 1986-06-24 |
| 4509344 | Apparatus and method of cooling using stored ice slurry | John S. Ludwigsen, Jill L. Ludwigsen | 1985-04-09 |