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:
Oct. 06, 2020
Filed:
Nov. 27, 2019
Win Coat Corporation, Hsinchu, TW;
Ta-Jo Liu, Hsinchu, TW;
Hsiu-Feng Yeh, Hsinchu, TW;
Yu-Sheng Lin, Hsinchu, TW;
Yun-Hsuan Chen, Hsinchu, TW;
Hung-Hsing Lin, Hsinchu, TW;
WIN COAT CORPORATION, Hsinchu, TW;
Abstract
The present invention relates to a base composition for a microneedle patch and a microneedle patch comprising the same. The base composition comprises a first HPMC, a second HPMC and PVP/VA, wherein the viscosity of the first HPMC is greater than that of the second HPMC, the weight ratio of the first HPMC relative to the second HPMC is 1:0.1 to 1:1.2, and the amount of the PVP/VA is 0.25 wt % to 2 wt %. By controlling the constitution of the base composition, the microneedle patch can not only be demolded smoothly during the stage of the production, but also obtain the desired softness, flatness, flexibility, skin adhesion during the stage of use and humidity resistance during the stage of storage.