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:
Feb. 08, 2005
Filed:
Oct. 17, 2002
Erik-andreas Klohr, Walsrode, DE;
Wolfgang Koch, Bomlitz, DE;
Dieter Klemm, Weimar, DE;
René Dicke, Jena, DE;
Erik-Andreas Klohr, Walsrode, DE;
Wolfgang Koch, Bomlitz, DE;
Dieter Klemm, Weimar, DE;
René Dicke, Jena, DE;
Wolff Walsrode AG, Walsrode, DE;
Abstract
A method of producing a cellueose ether that is predominantly substituted in the C2 position of the anhydroglucose unit of the cellulose is described. The regioselectively substituted saccharide ester produced according to the method of the present invention is selected from the group consisting of oligo-saccharide ester and polysaccharide ester, having a partial average degree of substitution (AS) at the C2 position of its anhydroglucose unit of at least 90% relative to the total AS. Also described is a blood plasma expander comprising the regioselectively substituted ester.