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:
Jul. 01, 1986
Filed:
Dec. 26, 1984
Masami Kamata, Kyoto, JP;
Iwao Tabushi, Kyoto, JP;
Saichi Morimoto, Tsuruga, JP;
Takashi Asaeda, Jyoyo, JP;
Yoshikazu Aoki, Otsu, JP;
Tachikawa Research Institute, Kyoto, JP;
Abstract
Method for preparing a cellulose solution wherein cellulose is dissolved in a mixed solvent which is consisted essentially of an aliphatic quaternary ammonium halide, containing a lower alkyl group and a halogen, and an organic solvent capable of dissolving the halide. The dissolving process must be carried out within a heating temperature range, between 50.degree. C. and 100.degree. C., particularly preferable between 70.degree. C. and 95.degree. C., so as to keep the degree of polymerization of the cellulose at a high level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile