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:
Jan. 05, 2016
Filed:
Apr. 14, 2013
Taisei Kako Co., Ltd., Osaka, JP;
Suzuken Co., Ltd., Aichi, JP;
Yukihiro Ogawa, Osaka, JP;
Ichiro Suzuki, Aichi, JP;
Taisei Kako Co. Ltd., Osaka, JP;
Suzuken Co., Ltd., Aichi, JP;
Abstract
A prefilled syringe of a before-use mixing type not requiring a bypass portion defined by a recessed inner surface portion of an outer cylinder, including first and second gaskets () fitted in the outer cylinder (), and non-rotatively and complementarily shaped engagement portions () respectively at a front end of the first gasket () and a rear end of the second gasket () to reduce the period for transferring a liquid between two chambers separated by the gaskets. During storage, the engagement portions abut each other to be kept out of engagement with each other, whereby a drug containing space is defined between the gaskets. When a liquid is transferred from a space defined on a rear side of the first gasket () to the drug containing space, the internal pressure of the drug containing space is prevented from being excessively increased.