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:
Sep. 01, 2015
Filed:
Apr. 09, 2009
Applicants:
David James Schreck, Lake City, MN (US);
Marion Mckinley Bradford, Hendersonville, NC (US);
Nye Atwood Clinton, Hurricane, WV (US);
Paul Aubry, Hurricane, WV (US);
Inventors:
David James Schreck, Lake City, MN (US);
Marion McKinley Bradford, Hendersonville, NC (US);
Nye Atwood Clinton, Hurricane, WV (US);
Paul Aubry, Hurricane, WV (US);
Assignee:
Iowa Corn Promotion Board, Johnston, IA (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D 493/04 (2006.01); C07D 493/02 (2006.01);
U.S. Cl.
CPC ...
C07D 493/04 (2013.01);
Abstract
An enhanced process for the production of a dianhydrosugar, such as isosorbide, from the corresponding sugar alcohol is described. The sugar alcohol is combined with an acid catalyst and reacted at elevated temperatures and at atmospheric pressure, eliminating the need for a vacuum. High selectivity and yields are achieved.