Patents by Inventor Zhongshui Yu

Zhongshui Yu 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: 9370492
    Abstract: The present invention provides novel solid pharmaceutical dosage forms for oral administration comprising a bisphosphonate, or a pharmaceutically acceptable salt thereof, which bisphosphonate is present in an amount not therapeutically effective when the bisphosphonate is orally administered alone, and a modified amino acid carrier, or a pharmaceutically acceptable salt thereof, which modified amino acid carrier is present in an amount effective to facilitate absorption of the bisphosphonate in the gastrointestinal tract such that the bisphosphonate is therapeutically effective. The ratio of bisphosphonate to modified amino acid carrier is from about 1:30 to about 1:1, respectively. These novel solid pharmaceutical dosage forms are useful in the treatment or control of bone diseases and particular disorders in calcium metabolism, including, for example, osteoporosis, hypercalcaemia of cancer, and the treatment of metastatic bone pain.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: June 21, 2016
    Assignee: EMISPHERE TECHNOLOGIES, INC.
    Inventors: Hashim Ahmed, Lewis Bender, Martin Howard Infeld, Shingai Majuru, Wantanee Phuapradit, Navnit Hargovindas Shah, Zhongshui Yu
  • Publication number: 20100183717
    Abstract: Disclosed herein are controlled-release formulations of a core comprising a core active agent (e.g., alfuzosin) and a wax excipient substantially coated with an extended-release coating.
    Type: Application
    Filed: January 15, 2010
    Publication date: July 22, 2010
    Inventors: Kristin Arnold, Zhongshui Yu, Siva Rama K. Nutalapati
  • Publication number: 20100172979
    Abstract: Disclosed herein are controlled-release formulations containing a core comprising a core active agent (e.g., levetiracetam) and a wax excipient, where the core is substantially coated with an extended-release coating.
    Type: Application
    Filed: December 18, 2009
    Publication date: July 8, 2010
    Inventors: Zhongshui Yu, Kristin Arnold, Siva Rama K. Nutalapati
  • Publication number: 20100159009
    Abstract: Disclosed herein are extended-release levetiracetam formulations having a matrix comprising levetiracetam and a hydrophobic excipient or an acrylic polymer excipient.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 24, 2010
    Inventors: Zhongshui Yu, Kristin Arnold, Siva Rama K. Nutalapati
  • Publication number: 20100092556
    Abstract: Alfuzosin compositions comprising a tablet core of alfuzosin and a release-retarding matrix comprising about 40 to about 80% (by weight) hydroxypropyl methyl cellulose with a maximum apparent viscosity of about 5600 cP, based on the total weight of the tablet core; and an extended-release coating substantially surrounding the tablet core comprising a release-retarding coating material, wherein the compositions are bioequivalent to the reference dosage form of NDA #021287 (UROXATRAL) are disclosed. Methods of making and using the alfuzosin compositions are also disclosed.
    Type: Application
    Filed: April 7, 2009
    Publication date: April 15, 2010
    Inventors: Kristin Arnold, Gandha V. Naringrekar, Siva Ram K. Nutalapati, Zhongshui Yu
  • Publication number: 20090281064
    Abstract: The present invention provides novel solid pharmaceutical dosage forms for oral administration comprising a bisphosphonate, or a pharmaceutically acceptable salt thereof, which bisphosphonate is present in an amount not therapeutically effective when the bisphosphonate is orally administered alone, and a modified amino acid carrier, or a pharmaceutically acceptable salt thereof, which modified amino acid carrier is present in an amount effective to facilitate absorption of the bisphosphonate in the gastrointestinal tract such that the bisphosphonate is therapeutically effective. The ratio of bisphosphonate to modified amino acid carrier is from about 1:30 to about 1:1, respectively. These novel solid pharmaceutical dosage forms are useful in the treatment or control of bone diseases and particular disorders in calcium metabolism, including, for example, osteoporosis, hypercalcaemia of cancer, and the treatment of metastatic bone pain.
    Type: Application
    Filed: July 16, 2009
    Publication date: November 12, 2009
    Applicant: Emisphere Technologies, Inc.
    Inventors: Hashim Ahmed, Lewis Bender, Martin Howard Infeld, Shingai Majuru, Wantanee Phuapradit, Navnit Hargovindas Shah, Zhongshui Yu
  • Publication number: 20090263478
    Abstract: Disclosed are amorphous carvedilol salt forms, controlled-release carvedilol compositions, and methods of preparing the forms and compositions.
    Type: Application
    Filed: July 9, 2009
    Publication date: October 22, 2009
    Inventors: Kristin Arnold, David F. Erkoboni, Rakeshkumar K. Lad, Siva Rama K. Nutalapati, Zhongshui Yu
  • Publication number: 20080292695
    Abstract: Disclosed are amorphous carvedilol salt forms, controlled-release carvedilol compositions, and methods of preparing the forms and compositions.
    Type: Application
    Filed: December 3, 2007
    Publication date: November 27, 2008
    Inventors: Kristin Arnold, E. Brendan Magrab, David F. Erkoboni, Zhongshui Yu, Siva Rama K. Nutalapati, Rakeshkumar K. Lad
  • Publication number: 20080107725
    Abstract: The present invention provides novel pharmaceutical solid dosage forms for oral administration comprising a therapeutically effective amount of an unstable crystalline form or an amorphous form of a therapeutically effective compound micro-embedded into an ionic water-insoluble polymer. The therapeutically effective compounds, which have a tendency to gel, are micro-embedded into an ionic water-insoluble polymer matrix to provide a dosage form having rapid, reproducible, and complete dissolution profiles. These novel solid pharmaceutical dosage forms are useful in the treatment or control of a number of diseases. The present invention also provides a method for treating a disease comprising administering to a subject, in need thereof, a therapeutically effective amount of the novel solid pharmaceutical dosage form. The present invention further provides a method for preparing the pharmaceutical dosage forms.
    Type: Application
    Filed: October 2, 2007
    Publication date: May 8, 2008
    Inventors: Antonio Albano, Wantanee Phuapradit, Navnit Shah, Zhongshui Yu, Lin Zhang
  • Publication number: 20070049557
    Abstract: The present invention provides novel solid pharmaceutical dosage forms for oral administration comprising a bisphosphonate, or a pharmaceutically acceptable salt thereof, which bisphosphonate is present in an amount not therapeutically effective when the bisphosphonate is orally administered alone; and a modified amino acid carrier, or a pharmaceutically acceptable salt thereof, which modified amino acid carrier is present in an amount effective to facilitate absorption of the bisphosphonate in the gastrointestinal tract such that the bisphosphonate is therapeutically effective. The ratio of bisphosphonate to modified amino acid carrier is from about 1:30 to about 1:1, respectively. These novel solid pharmaceutical dosage forms are useful in the treatment or control of bone diseases and particular disorders in calcium metabolism, including, for example, osteoporosis, hypercalcaemia of cancer, and the treatment of metastatic bone pain.
    Type: Application
    Filed: August 3, 2006
    Publication date: March 1, 2007
    Inventors: Hashim Ahmed, Lewis Bender, Martin Infeld, Shingai Majuru, Wantanee Phuapradit, Navnit Shah, Zhongshui Yu
  • Patent number: 6862890
    Abstract: The present invention provides a system and a method for the production of microparticles and nanoparticles of materials that can be dissolved. The system and method of the present invention provide quicker freezing times, which in turn produces a more uniform distribution of particle sizes, smaller particles, particles with increased porosity and a more intimate mixing of the particle components. The system and method of the present invention also produce particles with greater surface area than conventional methods. One form of the present invention provides a method for the preparation of particles. An effective ingredient is mixed with water, one or more solvents, or a combination thereof, and the resulting mixture is sprayed through an insulating nozzle located at or below the level of a cryogenic liquid. The spray generates frozen particles.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: March 8, 2005
    Assignee: Board of Regents, University of Texas System
    Inventors: Robert O. Williams, III, Keith P. Johnston, Timothy J. Young, True L. Rogers, Melisa K. Barron, Zhongshui Yu, Jiahui Hu
  • Publication number: 20040022861
    Abstract: The present invention provides a system and a method for the production of microparticles and nanoparticles of materials that can be dissolved. The system and method of the present invention provide quicker freezing times, which in turn produces a more uniform distribution of particle sizes, smaller particles, particles with increased porosity and a more intimate mixing of the particle components. The system and method of the present invention also produce particles with greater surface area than conventional methods. One form of the present invention provides a method for the preparation of particles. An effective ingredient is mixed with water, one or more solvents, or a combination thereof, and the resulting mixture is sprayed through an insulating nozzle located at or below the level of a cryogenic liquid. The spray generates frozen particles.
    Type: Application
    Filed: October 18, 2002
    Publication date: February 5, 2004
    Inventors: Robert O. Williams, Keith P. Johnston, Timothy J. Young, True L. Rogers, Melisa K. Barron, Zhongshui Yu, Jiahui Hu
  • Publication number: 20030041602
    Abstract: The present invention provides a system and a method for the production of microparticles and nanoparticles of materials that can be dissolved. The system and method of the present invention provide quicker freezing times, which in turn produces a more uniform distribution of particle sizes, smaller particles, particles with increased porosity and a more intimate mixing of the particle components. The system and method of the present invention also produce particles with greater surface area than conventional methods. One form of the present invention provides a method for the preparation of particles. An effective ingredient is mixed with water, one or more solvents, or a combination thereof, and the resulting mixture is sprayed through an insulating nozzle located at or below the level of a cryogenic liquid. The spray generates frozen particles.
    Type: Application
    Filed: January 30, 2002
    Publication date: March 6, 2003
    Inventors: Robert O. Williams, Keith P. Johnston, Timothy J. Young, True L. Rogers, Melisa K. Barron, Zhongshui Yu, Jiahui Hu