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. 15, 2003
Filed:
Dec. 07, 2000
Applicant:
Inventors:
Tadahisa Sato, Kanagawa, JP;
Katsuyoshi Yamakawa, Kanagawa, JP;
Hiroshi Onishi, Kanagawa, JP;
Tadahiro Tsujimoto, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Minami-Ashigara, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B 3/06 ; C08B 3/24 ; C08B 3/28 ;
U.S. Cl.
CPC ...
C08B 3/06 ; C08B 3/24 ; C08B 3/28 ;
Abstract
A producing method of a cellulose polymer powder is provided, which comprises dissolving a cellulose polymer by exposure to an organic solvent containing, as the main component, an ester-based solvent having from 2 to 8 carbon atoms, a ketone-based solvent having from 4 to 10 carbon atoms, or an alcohol-based solvent having from 3 to 6 carbon atoms, and carbon dioxide, and then removing the carbon dioxide and the organic solvent from the solution. A producing method of an organic solvent solution of a cellulose polymer is also provided.