Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6989455 | Two-stage process for the hydrogenation of maleic acid to 1,4-butanediol | Robert P. Hepfer, Gregory A. Norenberg, Thomas G. Attig, John R. Budge | 2006-01-24 |
| 6358483 | Sparger for oxygen injection into a fluid bed reactor | Louis R. Trott, Robert A. Gustaferro, Robert P. Hepfer, Stig-Axel Carlsson, Benjamin W. Close | 2002-03-19 |