Patents by Inventor Chun N. Chen

Chun N. Chen 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).

  • Patent number: 5605520
    Abstract: A blood vessel exerciser is provided that is formed by a long length of tubular material that is ergonomically curved. The exerciser includes a middle curved surface section, two curved arc sections, and two handles. The two curved arc sections are located on the opposing ends of the middle curved surface section, with two handles so that the two handles are formed symmetrically with respect to the middle curved surface section. A bushing is installed on each of the two handles at the two ends of the blood vessel exerciser, and freely move about the handles, so that the user can grip the blood vessel exerciser and then rotate it positively or negatively.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: February 25, 1997
    Inventor: Chun N. Chen
  • Patent number: 5527240
    Abstract: A gripping power training device includes a first holding component, a second holding component and at least two washers, in which a holding part the surface of which is undulated is installed on the top of the first holding component, and two pushing sticks are installed on two sides of the holding part respectively. An annular groove is formed on the end of each pushing stick for being engaged with the washer. The other holding part the shape of which is the same with that of the first holding component is installed on the top of the second holding component the appearance of which is similar to the first holding component, two cylindrical tanks the inner diameters of which are slightly larger than the diameters of the pushing sticks are installed on the bottom of the holding part for being inserted by the pushing stick of the first holding component and forming a sealed state between them.
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: June 18, 1996
    Inventor: Chun N. Chen
  • 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