Patents by Inventor Shan Y. Lin

Shan Y. Lin 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).

  • Preparation method of microdispersed tablet formulation of spray-dried sodium diclofenac enteric-coated microcapsules
    Patent number: 5202159
    Abstract: A preparation method of sodium diclofenac enteric-coated microcapsules by spray drying technique comprising the steps of(a) dissolving sodium diclofenac in an appropriate amount of distilled water;(b) adding an effective amount of excipients to the above solution to form a suspension;(c) adding methacrylic acid-ethyl acrylate copolymers (Eudragit L 30D) and polyethyleneglycol 6000 (PEG 6000) as the enteric-coating material to form a slurry;(d) atomizing the slurry to form spray-dried powder;(e) mixing the spray-dried powder with a mixture of microcrystalline cellulose (neocel) and pregelatinized starch (flo-starch); and(f) compressing the powder mixture into a microdispersed enteric tablet.The spray drying technique could be easily performed to prepare the enteric-coated microcapsules with aqueous latex polymer dispersion such as Eudragit L 30D as an enteric-coating polymer.
    Type: Grant
    Filed: December 31, 1990
    Date of Patent: April 13, 1993
    Assignee: Standard Chemical & Pharmaceutical Corp., Ltd.
    Inventors: Li J. Chen, Chun N. Chen, Shan Y. Lin