Patents by Inventor Chinhwa Cheng

Chinhwa Cheng 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).

  • Enhancing transdermal absorption compositions; transdermal dosage form; and process
    Patent number: 5453279
    Abstract: Provided are enhancing transdermal absorption compositions useful in transdermal absorption of progestins including progesterone and optionally an estrogen for contraceptive or hormone replacement and dosage forms using the novel enhancing compositions. The enhancing compositions comprise a combination of a lower alkyl ester of a polycarboxylic acid, an aliphatic monohydroxy alcohol and an aliphatic diol. Also provided are processes of administration of progestins and optionally estrogens using the novel dosage forms.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: September 26, 1995
    Assignee: TBS Laboratories, Inc.
    Inventors: Chia-Shun Lee, Jhili Wu, Chinhwa Cheng, Chin-Chih Chiang, Wenchin Tsai