Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6803108 | Carbon fiber binder pitch | Irwin C. Lewis | 2004-10-12 |
| 6395220 | Carbon fiber binder pitch | Irwin C. Lewis | 2002-05-28 |
| 5550176 | Room temperature setting carbonaceous cement with increased electrical conductivity and flexural strength | Irwin C. Lewis, Ronald Greinke, Richard I. Bretz, Dennis J. Kampe | 1996-08-27 |
| 5501729 | Pitch based impregnant for carbon and graphite and method | Irwin C. Lewis | 1996-03-26 |
| 5476679 | Method for making a graphite component covered with a layer of glassy carbon | Irwin C. Lewis, Douglas J. Miller | 1995-12-19 |
| 5373051 | Room temperature setting carbonaceous cement with increased oxidation resistance | Irwin C. Lewis, Ronald Greinke, Richard I. Bretz, Dennis J. Kampe | 1994-12-13 |
| 5280063 | Room temperature setting carbonaceous cement | Irwin C. Lewis, Ronald Greinke, Richard I. Bretz, Dennis J. Kampe | 1994-01-18 |
| 4971679 | Plasticizer and method of preparing pitch for use in carbon and graphite production | Irwin C. Lewis | 1990-11-20 |