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:
Apr. 25, 2000
Filed:
May. 13, 1998
Applicant:
Inventors:
William A Farone, Irvine, CA (US);
John E Cuzens, Santa Ana, CA (US);
Assignee:
Arkenol, Inc., Mission Viejo, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
562515 ; 549429 ; 549488 ; 549489 ; 560174 ;
Abstract
A method of producing dehydration products from one more 5-carbon or 6-carbon sugars includes reacting said one or more sugars at 40-240.degree. C. for 1 to 96 hours in the presence of 5-90% sulfuric acid, separating the reaction products, and recovering levulinic acid. The sugars are can be generated from strong acid hydrolysis of biomass, such as rice straw, paper, cotton and other cellulosic materials.