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:
Apr. 15, 2014
Filed:
Jul. 15, 2010
Takaaki Terahara, Tsukuba, JP;
Seiji Tokumoto, Tsukuba, JP;
Akira Tamura, Tokyo, JP;
Yumiko Yamada, Tokyo, JP;
Takaaki Terahara, Tsukuba, JP;
Seiji Tokumoto, Tsukuba, JP;
Akira Tamura, Tokyo, JP;
Yumiko Yamada, Tokyo, JP;
Hisamitsu Pharmaceutical Co., Inc., Tosu-shi, Saga, JP;
Toppan Printing Co., Ltd., Taito-Ku, Tokyo, JP;
Abstract
Relations between crystallinity and performance of a biodegradable resin, between weight-average molecular weight and strength thereof, and between weight-average molecular weight and performance thereof were clarified. As a result thereof, when a microneedle array was provided with microneedles containing noncrystalline polylactic acid which had a weight-average molecular weight of 40,000 to 100,000, it was possible to obtain a microneedle array which could maintain its functional performance.