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. 05, 2013
Filed:
Nov. 29, 2007
Naohisa Kawamura, Kasukabe, JP;
Takashi Saitoh, Kasukabe, JP;
Junko Tsuchiya, Kasukabe, JP;
Nipro Patch Co., Ltd., Saitama, JP;
Abstract
Disclosed is an adhesive skin patch having an SIS block copolymer as an adhesive component, which has an improved handling property and can reduce irritation to a user. The adhesive skin patch comprises a flexible substrate and an adhesive layer laminated on the substrate, wherein the adhesive layer comprises a styrene-isoprene-styrene block copolymer. In the adhesive skin patch, the tan δ value of the adhesive agent as determined by measuring a dynamic viscoelasticity at 32° C. satisfies a requirement represented by the following formula 1 at at least one frequency laying between 0.04 to 0.25 Hz. 0.25x+0.05≦y≦0.25x+0.10 (formula 1) [wherein x represents a frequency (Hz); and y represents a tan δ value.]