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. 26, 2026
Filed:
Feb. 18, 2021
Sumitomo Pharma Co., Ltd., Osaka, JP;
Eri Ichibayashi, Suita, JP;
Masayasu Tanaka, Suita, JP;
Yuki Ikeda, Suita, JP;
Tomohito Takita, Ibaraki, JP;
Kei Tamura, Ibaraki, JP;
Tetsuya Nakamura, Ibaraki, JP;
Kaiji Fujiwara, Ibaraki, JP;
Sumitomo Pharma Co., Ltd., Osaka, JP;
Abstract
The present invention relates to a transdermal absorption preparation that can maintain a blood concentration sufficient to exert the efficacy of tandospirone, and also shows good storage stability against heat, humidity, and light. According to the present invention, a transdermal absorption preparation containing tandospirone or a pharmaceutically acceptable salt thereof, and levulinic acid, which is superior in the skin permeability of tandospirone or a pharmaceutically acceptable salt thereof in the preparation, and shows good preservation stability against heat and light can be provided.