Patents by Inventor Zhen CHANG

Zhen CHANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PREVENTION OF BIOFILM FORMATION
    Publication number: 20180282556
    Abstract: Antibacterial coatings and methods of making the antibacterial coatings are described herein. A first branched polyethylenimine (BPEI) layer is formed and a first glyoxal layer is formed on a surface of the BPEI layer. The first BPEI layer and the first glyoxal layer are cured to form a crosslinked BPEI coating. The first BPEI layer can be modified with superhydrophobic moieties, superhydrophilic moieties, or negatively charged moieties to increase the antifouling characteristics of the coating. The first BPEI layer can be modified with contact-killing bactericidal moieties to increase the bactericidal characteristics of the coating.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 4, 2018
    Inventors: Amos Cahan, Hariklia Deligianni, Xin Ding, Mareva B. Fevre, James L. Hedrick, Pei-Yun S. Hsueh, Zhen Chang Liang, Nathaniel H. Park, Theodore G. van Kessel, Rudy J. Wojtecki, Yi Yan Yang
  • Clamp with driving unit
    Patent number: 7878491
    Abstract: An exemplary clamp includes a holder, a moving unit, a fixing arm, and a driving unit. The moving unit includes a push block, a connecting member, and a guiding member. The guiding member is fixed on the holder. The connecting member connects the push block and the guiding member. The push block includes a slanted side surface. The push block is guided to move by the guiding member. The slanted side surface of the push block interacts with the connecting member. The fixing arm is fixed to the connecting member. The driving unit is connected to the push block. The driving unit is capable of moving the push block of the moving unit.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: February 1, 2011
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Hua Li, Xi-Song Shuai, Zhen-Chang Tian, Zhuang Xiong, Dong Li
  • CLAMP WITH DRIVING UNIT
    Publication number: 20090166941
    Abstract: An exemplary clamp includes a holder, a moving unit, a fixing arm, and a driving unit. The moving unit includes a push block, a connecting member, and a guiding member. The guiding member is fixed on the holder. The connecting member connects the push block and the guiding member. The push block includes a slanted side surface. The push block is guided to move by the guiding member. The slanted side surface of the push block interacts with the connecting member. The fixing arm is fixed to the connecting member. The driving unit is connected to the push block. The driving unit is capable of moving the push block of the moving unit.
    Type: Application
    Filed: July 21, 2008
    Publication date: July 2, 2009
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: HUA LI, XI-SONG SHUAI, ZHEN-CHANG TIAN, ZHUANG XIONG, DONG LI