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:
May. 29, 1984
Filed:
Jul. 30, 1981
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ;
U.S. Cl.
CPC ...
435170 ; 435171 ; 435 68 ; 435 99 ; 435105 ; 435911 ; 435945 ; 162 65 ;
Abstract
The disclosure is concerned with a pretreatment process for removing lignin from lignocellulosic material so as to enhance enzymatic or microbial decomposability of cellulose. The pretreatment process comprises wetting lignocellulosic material with an alkaline aqueous solution in a manner that interstices between the cellulosic material remain, and exposing the wetted cellulosic material to an ozone-containing gas so as to decompose lignin in the lignocellulosic material with a very small energy consumption.