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. 19, 2022
Filed:
Sep. 11, 2018
Oji Holdings Corporation, Tokyo, JP;
Kotaro Ishikawa, Tokyo, JP;
Takuro Kashiwamura, Tokyo, JP;
Takuya Kato, Tokyo, JP;
Toru Koga, Tokyo, JP;
Suguru Ishikawa, Tokyo, JP;
OJI HOLDINGS CORPORATION, Tokyo, JP;
Abstract
The present invention provides a pentosan polysulfate having a uronic acid content of 0.0% by mass to 6.0% by mass, preferably a pentosan polysulfate having a structure represented by Formula I: wherein each R represents a hydrogen atom, —COCHor —SOX, and at least one R represents —SOX, wherein X represents a hydrogen atom or a monovalent or divalent metal, and n represents an integer of 1 or more and 30 or less; a pharmaceutically acceptable salt thereof; or a pharmaceutically acceptable solvate of the pentosan polysulfate or of a pharmaceutically acceptable salt thereof. The present invention further provides a method for producing pentosan polysulfate, the method comprising the steps of depolymerizing a plant-derived raw material to obtain neutral xylooligosaccharide and sulfating the neutral xylooligosaccharide, in this order.