Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5120930 | Plasma arc torch with improved nozzle shield and step flow | Richard W. Couch, Jr. | 1992-06-09 |
| 5074802 | Pneumatic-electric quick disconnect connector for a plasma arc torch | Isaac Gratziani | 1991-12-24 |
| 5070227 | Proceses and apparatus for reducing electrode wear in a plasma arc torch | Lifeng Luo, Richard W. Couch, Jr. | 1991-12-03 |
| 4902871 | Apparatus and process for cooling a plasma arc electrode | Richard W. Couch, Jr. | 1990-02-20 |
| 4861962 | Nozzle shield for a plasma arc torch | Richard W. Couch, Jr. | 1989-08-29 |
| 4816637 | Underwater and above-water plasma arc cutting torch and method | Richard W. Couch, Jr. | 1989-03-28 |
| 4791268 | Arc plasma torch and method using contact starting | Richard W. Couch, Jr. | 1988-12-13 |
| 4480369 | Gripping tool | Daniel W. Sanders | 1984-11-06 |
| 4308915 | Thin sheet heat exchanger | Horia A. Dinulescu | 1982-01-05 |
| 4292062 | Cryogenic fuel tank | Horia A. Dinulescu | 1981-09-29 |
| 4258677 | Engine heating device | — | 1981-03-31 |