http://www.freshpatents.com/Distillation--processes-separatory-dtnewntc203.php USPTO Class 203 - Distillation: processes, separatory en-us Fri, 20 Jun 2008 11:48:22 -0700 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/Separation-method-dt20080612ptan20080135396.php Fri, 20 Jun 2008 11:48:22 -0700 A feed stream is fed to a first distillation stage comprising at least one distillation column (stripper) and the distillate from the first distillation stage is fed to a second distillation column (rectifier). The feed stream is sub-divided into two streams and fed to two distillation columns, in such a...