The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2006
Filed:
May. 05, 2004
Mayis Seapan, Landenberg, PA (US);
George F. Diffendall, Wilmington, DE (US);
Robert E. Trotter, Wilmington, DE (US);
Tyler T. Ames, Wilmington, DE (US);
F. Glenn Gallagher, Wilmington, DE (US);
Mayis Seapan, Landenberg, PA (US);
George F. Diffendall, Wilmington, DE (US);
Robert E. Trotter, Wilmington, DE (US);
Tyler T. Ames, Wilmington, DE (US);
F. Glenn Gallagher, Wilmington, DE (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The invention discloses a hydrogenation process for removing impurities and controlling acid for use in downstream processing of biochemically-derived 1,3-propanediol. Preferably, the biochemically-derived 1,3-propanediol, before the contacting, has an initial color and, after the contracting, has a color that is lower than the initial color.