Patents by Inventor Wen-Chang Shen

Wen-Chang Shen 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).

  • Publication number: 20240084064
    Abstract: A foamable resin composition comprising: (meth)acrylate oligomer, which accounts for 10-40 wt % of the foamable resin composition; (meth)acrylate monomer, which accounts for 35-80 wt % of the foamable resin composition; a photocuring initiator, which accounts for 1-5 wt % of the foamable resin composition; and a foaming agent, which accounts for 3-20 wt % of the foamable resin composition; wherein the foamable resin composition has a specific gravity of 0.10-1.05 g/cm3 after photocuring and thermal foam expansion for 15-20 minutes at 120° C. The aforementioned foamable resin composition can become a low specific gravity (0.10-1.05 g/cm3) material after photocuring and thermal foam expansion, then can expand the application in 3D printing, and manufacture of plastic products, such as shoe soles, coasters, floats, various types of protective gear and the like.
    Type: Application
    Filed: September 14, 2022
    Publication date: March 14, 2024
    Inventors: WEN-CHANG SHEN, KUEI-YUAN CHANG, MEI-CHUAN HSU
  • Patent number: 5395900
    Abstract: An acrylated epoxy resin based on bisphenol-S having a formula as follows ##STR1## wherein ph is phenylene or halophenylene; R.sub.1 is C.sub.2 -C.sub.4 alkylene;R.sub.2 is --CH.sub.2 CH(OH)CH.sub.2 --;R.sub.3 is acryloyl or methacryloyl;m is 0-4 integer, n is 0-4 integer and k is 0-5 integer.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: March 7, 1995
    Assignee: National Science Council
    Inventors: Der-Jan Liaw, Wen-Chang Shen
  • Patent number: 5363969
    Abstract: A combined cosmetic case and picture stand includes first and second cosmetic casing halves, a transparent pane member and a stand member. The first and second cosmetic casing halves are hinged to one another and are retained releasably in a closed position. The first cosmetic casing half has an outer side which is formed with a central recess for receiving a picture therein. The second cosmetic casing half has an inner side which confines a space for receiving cosmetic therein and an outer side which is formed with a groove unit. The pane member has a shape which corresponds to that of the central recess. The pane member is received in the central recess and is formed with a peripheral frame unit that is mounted detachably to the outer side of the first cosmetic casing half. The stand member is received in the groove unit and is mounted pivotally to the outer side of the second cosmetic casing half.
    Type: Grant
    Filed: August 3, 1993
    Date of Patent: November 15, 1994
    Assignee: Mei Shual Cosmetics Co., Ltd.
    Inventor: Wen-Chang Shen
  • Patent number: D349977
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: August 23, 1994
    Assignee: Mei Shual Cosmetics Co., Ltd.
    Inventor: Wen-Chang Shen
  • Patent number: D350625
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: September 13, 1994
    Assignee: Mei Shuai Cosmetics Co., Ltd.
    Inventor: Wen-Chang Shen