Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5612507 | Beneficial use of energy-containing wastes | Walter B. Grens, Oldrich Machacek, Gary R. Eck | 1997-03-18 |
| 5535946 | Method for shredding material | Ronald D. Stewart | 1996-07-16 |
| 5536897 | Beneficial use of energy-containing wastes | Walter B. Grens, Oldrich Machacek, Gary R. Eck | 1996-07-16 |
| 4822637 | Fabrication of magnetic recording medium with lubricant | Fred C. Chung | 1989-04-18 |
| 4736845 | """Brake/hold down"" plug for computer tape reel closure" | Michael Justin Balderas, Elsworth L. Urquhart | 1988-04-12 |
| 4686146 | Radiation-cured recording composition with bi-part lube | Dennis W. Karle, Zie A. Payne, Fred C. Chung | 1987-08-11 |
| 4659627 | Magnetic recording medium with lubricant | Fred C. Chung | 1987-04-21 |