Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4579171 | Shell and tube heat exchanger with welds joining the tubes to tube sheet | Donald C. Stafford, Tushar K. Shah | 1986-04-01 |
| 4572287 | Falling film heat exchanger with film forming members | Donald C. Stafford | 1986-02-25 |
| 4570702 | Shell and tube vertical heat exchanger with sleeves around the tubes | Donald C. Stafford, Tushar K. Shah | 1986-02-18 |
| 4567942 | Shell and tube falling film heat exchanger with tubes in concentric rings and liquid distribution box | Donald C. Stafford, Tushar K. Shah | 1986-02-04 |
| 4564064 | Falling film heat exchanger with member to distribute liquid on external surfaces of tubes | Donald C. Stafford | 1986-01-14 |
| 4519448 | Falling film heat exchanger with member to distribute liquid on external surfaces of tubes | Donald C. Stafford | 1985-05-28 |
| 4442679 | Vertical shell and tube heat exchanger with sleeves around upper part of tubes | Donald C. Stafford, Tushar K. Shah | 1984-04-17 |
| 4421160 | Shell and tube heat exchanger with removable tubes and tube sheets | Donald C. Stafford | 1983-12-20 |
| 4323115 | Shell and tube heat exchanger with polymeric tube sheets | Donald C. Stafford | 1982-04-06 |
| 4296612 | Freeze exchanger with removable tube liner | — | 1981-10-27 |
| 4286436 | Falling film freeze exchanger | Gerald E. Engdahl, James A. Nail | 1981-09-01 |