Patents by Inventor Prema Vijayakumar

Prema Vijayakumar 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: 20230338294
    Abstract: The present disclosure provides a pharmaceutical oral dosage form. In one embodiment, the dosage form comprises a formulation comprising an active pharmaceutical ingredient (API) and a polymer, wherein said API is a compound inhibiting c-Met tyrosine kinase.
    Type: Application
    Filed: April 24, 2021
    Publication date: October 26, 2023
    Inventors: Sanjeev REDKAR, Thomas STUMPFIG, Anne MUSKE-DUKES-DRIGGS, Thomas REYNOLDS, Thurman Russell FALK, Mike Tso-Ping LI, Prema VIJAYAKUMAR
  • Patent number: 8460641
    Abstract: An oil-in-water microemulsion or sub-micron emulsion composition for dermal delivery of at least one pharmaceutically active ingredient, comprising: a first part including at least one occlusive agent and one or more lipophilic surfactants dispersed throughout a second part including water and at least one hydrophilic surfactant, and a non-surfactant amphiphilic type compound, pharmaceutically active ingredient, and water. It has been found that if a non-surfactant amphiphilic type compound is added together with the second part as would conventionally be the case, a microemulsion or sub-micron emulsion is not formed, by adding the so called third part, phase assembly occurs at a lower temperature than would be expected and moreover, this phase appears to assist in maintaining the microemulsion or sub-micron emulsion characteristics of the formulation during storage at normal temperatures.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: June 11, 2013
    Assignee: Stiefel Research Australia Pty Ltd
    Inventors: Maria Graziella Larm, Ronald Harding, Michael Johnston, Albert Zorko Abram, Prema Vijayakumar, Phoebe Sun
  • Patent number: 8449867
    Abstract: An oil in water microemulsion or sub-micron emulsion composition for dermal delivery of at least one pharmaceutically active ingredient, is provided. The composition includes an oil phase dispersed throughout a water phase, the oil phase including at least one member selected from the group consisting of an animal oil, a mineral oil, a vegetable oil, a silane member, a siloxane, an ester, a fatty acid, a fat, a halogen compound, and an alkoxylated alcohol; and at least one lipophilic surfactant, the water phase including at least one hydrophilic surfactant, water and optionally a non-surfactant amphiphilic compound, the weight ratio of the at least one hydrophilic surfactant to the at least one lipophilic surfactant being approximately 9.0:1.0 to 2.0:3.0.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: May 28, 2013
    Assignee: Stiefel Research Australia Pty Ltd
    Inventors: Maria Graziella Larm, Ronald Harding, Michael Johnston, Albert Zorko Abram, Prema Vijayakumar, Phoebe Sun
  • Publication number: 20100055137
    Abstract: An oil in water microemulsion or sub-micron emulsion composition for dermal delivery of at least one pharmaceutically active ingredient, is provided. The composition includes an oil phase dispersed throughout a water phase, the oil phase including at least one member selected from the group consisting of an animal oil, a mineral oil, a vegetable oil, a silane member, a siloxane, an ester, a fatty acid, a fat, a halogen compound, and an alkoxylated alcohol; and at least one lipophilic surfactant, the water phase including at least one hydrophilic surfactant, water and optionally a non-surfactant amphiphilic compound, the weight ratio of the at least one hydrophilic surfactant to the at least one lipophilic surfactant being approximately 9.0:1.0 to 2.0:3.0.
    Type: Application
    Filed: June 25, 2009
    Publication date: March 4, 2010
    Applicant: STIEFEL RESEARCH AUSTRALIA PTY LTD
    Inventors: Maria Graziella Larm, Ronald Harding, Michael Johnston, Albert Zorko Abram, Prema Vijayakumar, Phoebe Sun
  • Patent number: 7183068
    Abstract: This invention relates to methods for reducing the presence of a compound in an ionically conductive material, e.g., for use in iontophoretic devices, wherein the presence of the compound interferes with detecting a selected analyte. Removal of the compound can typically take place either during or after the manufacture of the ionically conductive material or an assembly comprising this material. Also disclosed are methods for generating selectively permeable barriers on the reactive faces of electrodes. Further, this invention relates to hydrogels comprising one or more biocides, as well as assemblies containing such hydrogels.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: February 27, 2007
    Assignee: Animas Technologies, LLC
    Inventors: Kim K. Burson, Michelle Van Wyhe, Jeffrey Pudlo, Michael Reidy, Pravin Soni, Christopher Uhegbu, Prema Vijayakumar
  • Patent number: 6902905
    Abstract: This invention relates to methods for reducing the presence of a compound in an ionically conductive material, e.g., for use in iontophoretic devices, wherein the presence of the compound interferes with detecting a selected analyte. Removal of the compound can typically take place either during or after the manufacture of the ionically conductive material or an assembly comprising this material. Also disclosed are methods for generating selectively permeable barriers on the reactive faces of electrodes. Further, this invention relates to hydrogels comprising one or more biocides, as well as assemblies containing such hydrogels.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: June 7, 2005
    Assignee: Cygnus, Inc.
    Inventors: Kim K. Burson, Michelle Van Wyhe, Jeffrey Pudlo, Michael Reidy, Pravin Soni, Christopher Uhegbu, Prema Vijayakumar
  • Publication number: 20040062759
    Abstract: A hydrogel patch is disclosed which is comprised of a polymeric material which forms a gel with water with the material being present in an amount of about 0.5% to 40% by weight based on the weight of the patch. Electrical conductively of the water is increased by the addition of an electrolyte. The patch comprises an enzyme which is capable of catalyzing a reaction with a biomedically important molecule such as glucose. Glucose drawn into the patch undergoes a reaction with the aid of the enzyme and the hydrogen peroxide released flows through the electrically conductivity of the water and may react at an electrode surface to generate a signal related to the amount of glucose entering the patch. The patch is also preferably comprised of a buffer which maintains the pH of the patch in the range of from about 3 to 9, and may be further comprised of a cross-linking agent, a biocide, a humectant, and a surfactant. The patch is preferably in the form of a thin (5 &mgr;m-50 mils), flat circular disc (0.
    Type: Application
    Filed: September 17, 2003
    Publication date: April 1, 2004
    Applicant: Cygnus, Inc.
    Inventors: William Abraham, Bret Berner, Priti S. Joshi, Phillip J. Plante, Prema Vijayakumar
  • Publication number: 20030199745
    Abstract: This invention relates to methods for reducing the presence of a compound in an ionically conductive material, e.g., for use in iontophoretic devices, wherein the presence of the compound interferes with detecting a selected analyte. Removal of the compound can typically take place either during or after the manufacture of the ionically conductive material or an assembly comprising this material. Also disclosed are methods for generating selectively permeable barriers on the reactive faces of electrodes. Further, this invention relates to hydrogels comprising one or more biocides, as well as assemblies containing such hydrogels.
    Type: Application
    Filed: May 14, 2003
    Publication date: October 23, 2003
    Applicant: Cygnus, Inc.
    Inventors: Kim K. Burson, Michelle Van Wyhe, Jeffrey Pudlo, Michael Reidy, Pravin Soni, Christopher Uhegbu, Prema Vijayakumar
  • Patent number: 6615078
    Abstract: This invention relates to methods for reducing the presence of a compound in an ionically conductive material, e.g., for use in iontophoretic devices, wherein the presence of the compound interferes with detecting a selected analyte. Removal of the compound can typically take place either during or after the manufacture of the ionically conductive material or an assembly comprising this material. Also disclosed are methods for generating selectively permeable barriers on the reactive faces of electrodes. Further, this invention relates to hydrogels comprising one or more biocides, as well as assemblies containing such hydrogels.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: September 2, 2003
    Assignee: Cygnus, Inc.
    Inventors: Kim K. Burson, Michelle Van Wyhe, Jeffrey Pudlo, Michael Reidy, Pravin Soni, Christopher Uhegbu, Prema Vijayakumar
  • Patent number: 6438414
    Abstract: The invention relates generally to consumable components of a device used for continually or continuously measuring the concentration of target chemical analytes present in a biological system. More particularly, the invention relates to collection assemblies, laminate structures, and autosensor assemblies, which are used in connection with a transdermal sampling device. In one aspect, the invention includes autosensor assemblies which include laminate structures, electrode assemblies, and support trays. One important application of the invention involves an autosensor assembly for use in a blood glucose monitoring device.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: August 20, 2002
    Assignee: Cygnus, Inc.
    Inventors: Thomas E. Conn, Russell Ford, Pravin L. Soni, Michael J. Tierney, Prema Vijayakumar
  • Patent number: 6393318
    Abstract: The invention relates generally to consumable components of a device used for continually or continuously measuring the concentration of target chemical analytes present in a biological system. More particularly, the invention relates to collection assemblies, laminate structures, and autosensor assemblies, which are used in connection with a transdermal sampling device. In one aspect, the invention includes autosensor assemblies which include laminate structures, electrode assemblies, and support trays. One important application of the invention involves an autosensor assembly for use in a blood glucose monitoring device.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: May 21, 2002
    Assignee: Cygnus, Inc.
    Inventors: Thomas E. Conn, Russell Ford, Pravin L. Soni, Michael J. Tierney, Prema Vijayakumar
  • Publication number: 20020053637
    Abstract: The invention relates generally to consumable components of a device used for continually or continuously measuring the concentration of target chemical analytes present in a biological system. More particularly, the invention relates to collection assemblies, laminate structures, and autosensor assemblies, which are used in connection with a transdermal sampling device. In one aspect, the invention includes autosensor assemblies which include laminate structures, electrode assemblies, and support trays. One important application of the invention involves an autosensor assembly for use in a blood glucose monitoring device.
    Type: Application
    Filed: November 30, 2001
    Publication date: May 9, 2002
    Applicant: Cygnus, Inc.
    Inventors: Thomas E. Conn, Russell Ford, Pravin L. Soni, Michael J. Tierney, Prema Vijayakumar
  • Patent number: 6341232
    Abstract: The invention relates generally to methods of producing consumable components of a device used for measuring the concentration of target chemical analytes present in a biological system. More particularly, the invention relates methods of producing collection assemblies, laminate structures, and autosensor assemblies, which are used in connection with a transdermal sampling device. In one aspect, the invention includes methods of producing autosensor assemblies which include laminate structures, electrode assemblies, and support trays. One important application of the invention involves methods of producing an autosensor assembly for use in a blood glucose monitoring device.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: January 22, 2002
    Assignee: Cygnus, Inc.
    Inventors: Thomas E. Conn, Russell Ford, Pravin L. Soni, Michael J. Tierney, Prema Vijayakumar
  • Publication number: 20020004640
    Abstract: The invention relates generally to consumable components of a device used for continually or continuously measuring the concentration of target chemical analytes present in a biological system. More particularly, the invention relates to collection assemblies, laminate structures, and autosensor assemblies, which are used in connection with a transdermal sampling device. In one aspect, the invention includes autosensor assemblies which include laminate structures, electrode assemblies, and support trays. One important application of the invention involves an autosensor assembly for use in a blood glucose monitoring device.
    Type: Application
    Filed: March 16, 2001
    Publication date: January 10, 2002
    Applicant: Cygnus, Inc.
    Inventors: Thomas E. Conn, Russell Ford, Pravin L. Soni, Michael J. Tierney, Prema Vijayakumar