公开(公告)号：US10507170B2

公开(公告)日：2019-12-17

申请号：US15772494

申请日：2016-09-21

Applicant: COSMAX, INC. ,  Korea Advanced Institute of Science and Technology

Inventor： Ho Yeon Son ,  Yoon Sung Nam ,  Ji Hui Jang ,  Su Ji Kim ,  Jun Bae Lee ,  Myeong-Sam Park

IPC: A61K8/02 ,  A61K8/27 ,  A61K8/29 ,  A61Q19/00 ,  A61K8/60 ,  A61K8/37 ,  A61K8/19 ,  A61K8/34 ,  A61K8/81 ,  A61Q17/04

Abstract: The present invention provides a method for preparing porous organic/inorganic composite powder which includes attaching inorganic oxide nanoparticles in a multi-layer form by repeating steps of attaching polyphenol to porous polymethyl methacrylate (PMMA) microspheres and attaching inorganic oxide nanoparticles to the porous polymethyl methacrylate (PMMA) microspheres to which polyphenol is attached, and a cosmetic composition including the porous organic/inorganic composite powder.

公开(公告)号：US11041896B2

公开(公告)日：2021-06-22

申请号：US16080408

申请日：2017-01-24

Applicant: COSMAX, INC.

Inventor： Sung Yun Hong ,  Ji Hui Jang ,  Su Ji Kim ,  Jun Bae Lee ,  Youn Joon Kim ,  Kweon Jong Yoo ,  Hui Yun Hwang ,  Jun Hyeok Ahn ,  Sang Gyun Hwang

IPC: G01R29/22

Abstract: Provided is a piezoelectric property measuring apparatus for a liquid or viscous material. The piezoelectric property measuring apparatus includes a fixing jig having an inner space and an opened space; an operating jig configured to close the opened region of the inner space; a first electrode and a second electrode; a driving module moving the operating jig according to a driving signal; a motion information measuring module measuring motion information of the operating jig; a charge amount measuring module measuring the charge amount through the first electrode and the second electrode; and a control module generating the driving signal for the driving module, supplying the driving signal to the driving module, receiving the motion information, receiving charge amount information of the closed space, and measuring a piezoelectric property of the sample by using the motion information and the charge amount information.