Patents by Inventor Robert Shen

Robert 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: 20090324716
    Abstract: The present invention features a tablet including particles containing a pharmaceutically active agent, wherein the particles are coated with (a) a first film layer containing a modified release polymer; and (b) a second film layer containing (i) a first polymer, wherein the first polymer is a polymer of ethyl acrylate and methyl methacrylate and (ii) a second polymer, wherein the second polymer is a polymer of methyl acrylate, methyl methacrylate and methacrylic acid.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 31, 2009
    Inventors: Robert Shen, Vincent Chen, Del-Yang Lee
  • Publication number: 20080118571
    Abstract: A pharmaceutical dosage form comprising non-steroidal-anti-inflammatory drugs, in particular propionic acid derivatives such as ibuprofen, along with a second active ingredient having a shorter therapeutically effective plasma concentration duration, such as phenylephrine, and methods of administering the same are provided. This method provides improved therapeutic effect, in particular pain relief along with decongestant relief, over extended time periods.
    Type: Application
    Filed: November 20, 2007
    Publication date: May 22, 2008
    Inventors: Der-Yang Lee, Jen-Chi Chen, Vincent Chen, Robert Shen
  • Publication number: 20080113021
    Abstract: The invention relates to an immediate release tablet capable of being chewed or disintegrated in the oral cavity, which comprises a plurality of particles in a matrix. The particles contain an active ingredient, such as ibuprofen, and a first water soluble acid having a solubility greater than about 10 g/100 mL water at 20° C.; and the matrix contains a second water soluble acid having a solubility less than about 5 g/100 mL water at 20° C.
    Type: Application
    Filed: October 24, 2007
    Publication date: May 15, 2008
    Inventor: Robert Shen
  • Publication number: 20060078612
    Abstract: The invention relates to a tablet capable of being chewed or disintegrated in the oral cavity, which comprises an enteric coated aspirin active ingredient, and preferably a lightly compressed matrix comprising directly compressible carbohydrate(s) and at least one sweetener.
    Type: Application
    Filed: October 8, 2004
    Publication date: April 13, 2006
    Inventors: Manoj Shah, James Beahm, Robert Shen
  • Publication number: 20060078611
    Abstract: The invention relates to a tablet capable of being chewed or disintegrated in the oral cavity, which comprises an enteric coated granule comprising an intimate mixture of an aspirin active ingredient and at least one binder capable of preferentially absorbing ambient moisture.
    Type: Application
    Filed: October 8, 2004
    Publication date: April 13, 2006
    Inventors: Manoj Shah, James Beahm, Robert Shen
  • Patent number: 5841724
    Abstract: A circuit for connecting a memory cell matrix to voltage sources includes a voltage sensor responsive to the voltage levels of a first voltage source and of a second voltage source by producing a sense signal, and a voltage source coupler connected between the memory cell matrix and the voltage sensor. When the first voltage source voltage level is greater than a predetermined threshold voltage level, the sense signal causes the voltage source coupler to drive the first voltage source voltage level into the memory cell matrix. When the first voltage source voltage level falls to the threshold voltage level, the sense signal also causes the voltage source coupler to drive the second voltage source voltage level into the memory cell matrix to sustain memory cell data.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: November 24, 1998
    Assignee: Enable Semiconductor, Inc.
    Inventors: Mark S. Ebel, Robert Shen