Patents by Inventor Padmaja Shivanand

Padmaja Shivanand 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: 6719751
    Abstract: A dosage form manufactured from an extruded polymer tube and method for manufacturing the dosage form are disclosed. The dosage form is preferably an osmotic dosage form and includes a therapeutic agent and an expandable composition contained within the lumen of the extruded polymer tube.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: April 13, 2004
    Inventors: Liang-Chang Dong, Patrick S.-L. Wong, Atul Devdatt Ayer, Padmaja Shivanand, Michael A. DesJardin
  • Publication number: 20040058002
    Abstract: The present invention includes an expandable osmotic layer and a coating suspension for providing an expandable osmotic layer, both of which are useful for the manufacture of controlled release dosage forms. The expandable osmotic layer of the present invention may be produced using the coating suspension of the present invention. Advantageously, the coating suspension of the present invention can be used to coat expandable osmotic layers under both wet and dry process conditions without sacrificing the quality of the expandable osmotic layers produced, and therefore provides a relatively robust coating suspension that facilitates commercial production of controlled release dosage forms including a coated expandable osmotic layer.
    Type: Application
    Filed: June 28, 2003
    Publication date: March 25, 2004
    Inventors: Shaoling Li, Liang-Chang Dong, Padmaja Shivanand, Patrick S.L. Wong
  • Publication number: 20040010000
    Abstract: Dosage forms and methods for the controlled release of oxycodone over a prolonged period of time are described. The sustained release dosage forms provide therapeutically effective average steady-state plasma oxycodone concentrations when administered once per day. This once-a-day dosing regimen results in only one peak plasma oxycodone concentration occurrence in each 24 hour period that occurs at a later time after administration and exhibits a lesser magnitude than the peak plasma oxycodone concentration that occurs following administration of oxycodone in an immediate-release dosage form and other prior art extended release dosage forms.
    Type: Application
    Filed: April 25, 2003
    Publication date: January 15, 2004
    Inventors: Atul D. Ayer, Padmaja Shivanand, Nishit B. Modi, Sonya Seroff, Michael A. DesJardin, Tracy A. Fink, Linda M. Hearney, Deborah J. Johnson, Clark P. Allphin
  • Publication number: 20030224051
    Abstract: Dosage forms, compositions and methods for the controlled release of oxycodone over a prolonged period of time are described. The present invention discloses a novel means for delivering varying doses of oxycodone using a drug composition having only oxycodone, a polymer carrier and varying amounts of salt to provide a particular viscosity of the hydrated drug core for delivery of the drug at the desired release rate. The present invention functions by modulating the viscosity of the hydrated drug layer in operation by the addition or reduction of salts in the drug composition. The system is independent of solubility enhancers or pH modifiers. The sustained release dosage forms provide therapeutically effective average steady-state plasma oxycodone concentrations when administered once per day.
    Type: Application
    Filed: May 28, 2003
    Publication date: December 4, 2003
    Inventors: Tracy A. Fink, Atul D. Ayer, Deborah J. Johnson, Padmaja Shivanand, Clark P. Allphin
  • Publication number: 20030055408
    Abstract: A dosage form manufactured from an extruded polymer tube and method for manufacturing the dosage form are disclosed. The dosage form is preferably an osmotic dosage form and includes a therapeutic agent and an expandable composition contained within the lumen of the extruded polymer tube.
    Type: Application
    Filed: October 24, 2002
    Publication date: March 20, 2003
    Inventors: Liang-Chang Dong, Patrick S.-L. Wong, Atul Devdatt Ayer, Padmaja Shivanand, Michael A. DesJardin
  • Patent number: 6491683
    Abstract: A dosage form manufactured from an extruded polymer tube and method for manufacturing the dosage form are disclosed. The dosage form is preferably an osmotic dosage form and includes a therapeutic agent and an expandable composition contained within the lumen of the extruded polymer tube.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: December 10, 2002
    Assignee: ALZA Corporation
    Inventors: Liang-Chang Dong, Patrick S. L. Wong, Atul Devdatt Ayer, Padmaja Shivanand, Michael A. DesJardin
  • Patent number: 6346270
    Abstract: A therapeutic composition, a dosage form and a method are disclosed for administering phenytoin indicated for the management of epilepsy.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: February 12, 2002
    Assignee: Alza Corporation
    Inventors: Padmaja Shivanand, Zahedeh Hatamkhany, Barbara F. Laidlaw, Atul D. Ayer
  • Publication number: 20010012847
    Abstract: Methods and devices for maintaining a desired therapeutic drug effect over a prolonged therapy period are provided. In particular, oral dosage forms that release drug within the gastrointestinal tract at an ascending release rate over an extended time period are provided. The dosage forms may additionally comprise an immediate-release dose of drug.
    Type: Application
    Filed: March 8, 2001
    Publication date: August 9, 2001
    Inventors: Andrew C. Lam, Padmaja Shivanand, Atul D. Ayer, Zahedeh Hatamkhany, Suneel K. Gupta, Diane R. Guinta, Carol A. Christopher, Samuel R. Saks, Lawrence G. Hamel, Jeri D. Wright, Richard G. Weyers
  • Patent number: 6224907
    Abstract: A dosage form is disclosed for administering a leukatriene-receptor antagonist to a patient over time.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: May 1, 2001
    Assignee: Alza Corporation
    Inventors: Nipun Davar, Atul Devdatt Ayer, Paul Minn Hwang, Padmaja Shivanand, Brenda J. Pollock
  • Patent number: 6110499
    Abstract: A therapeutic composition, a dosage form and a method are disclosed for administering phenytoin indicated for the management of epilepsy.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: August 29, 2000
    Assignee: ALZA Corporation
    Inventors: Padmaja Shivanand, Zahedeh Hatamkhany, Barbara F. Laidlaw, Atul D. Ayer