Patents by Inventor Sai-Jun Gong

Sai-Jun Gong 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).

  • Transdermal contraceptive delivery system and process
    Patent number: 5762956
    Abstract: A transdermal contraceptive delivery system (TCDS) for fertility control in women is described comprising a backing layer, an adjoining layer of a solid absorption adhesive polymer matrix in which minimum effective daily doses of an estrogen and a progestin are dispersed and released for transdermal absorption. Presently preferred is use of the natural estrogen, 17-beta-estradiol, and the synthetic progestin, levonorgestrel. Along with these two steroidal contraceptive agents, a combination of several chemical skin permeation enhancing agents, blended at specific weight ratios, are homogeneously dispersed in the adhesive polymer matrix. The invention also provides a process of fertility control utilizing the transdermal contraceptive delivery system.
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: June 9, 1998
    Assignee: Rutgers, The State University of New Jersey
    Inventors: Yie W. Chien, Te-Yen Chien, Sai-Jun Gong