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:
Mar. 29, 2005
Filed:
Apr. 16, 1999
Nobuyoshi Nambu, Yokkaichi, JP;
Osamu Ito, Yokkaichi, JP;
Nobutake Mihara, Chiba, JP;
Takao Doi, Yokkaichi, JP;
Nobuyoshi Nambu, Yokkaichi, JP;
Osamu Ito, Yokkaichi, JP;
Nobutake Mihara, Chiba, JP;
Takao Doi, Yokkaichi, JP;
Chelest Corporation and Chubu Chelest Co., Ltd., Osaka, JP;
Abstract
A chelate-forming filter which comprises a filter medium made of natural, regenerated, or synthetic fibers wherein the fiber molecules have, incorporated therein, chelate-forming functional groups represented by general formula (1) [wherein G represents a residue of a chain sugar alcohol or of a polyhydric alcohol; and R represents hydrogen, (lower) alkyl, or -G (wherein G has the same meaning as the above G, and the two G's may be the same or different)] or (3) (wherein R, R, and Reach represents lower alkylene; and n is an integer of 1 to 4).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile