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. 19, 2008
Filed:
Jun. 15, 2005
Weiyu Fan, Minnetonka, MN (US);
John A. Bohlmann, Ottumwa, IA (US);
James R. Trinkle, Bussey, IA (US);
James Donald Steinke, Oskaloosa, IA (US);
Ki-oh Hwang, Oskaloosa, IA (US);
Joseph P. Henning, Eddyville, IA (US);
Weiyu Fan, Minnetonka, MN (US);
John A. Bohlmann, Ottumwa, IA (US);
James R. Trinkle, Bussey, IA (US);
James Donald Steinke, Oskaloosa, IA (US);
Ki-Oh Hwang, Oskaloosa, IA (US);
Joseph P. Henning, Eddyville, IA (US);
Cargill, Incorporated, Minneapolis, MN (US);
Abstract
A highly deacetylated chitosan obtained from microbial biomass, a method of obtaining chitosan from microbial biomass, and biomass for making chitosan are disclosed. The method includes providing chitin-containing biomass; reacting the chitin-containing biomass in a caustic solution of greater than 25 percent alkali at a reaction temperature greater than 95° C. for a reaction period of at least 10 hours to convert the chitin in the biomass to chitosan; and separating the chitosan from the caustic solution.