Patents by Inventor Pradeep Dhal

Pradeep Dhal 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: 20140275469
    Abstract: Amine functional polyamides comprise amine and ammonium groups along the polymer chain. Amine functional polyamides can be used as pharmaceutical agents and in pharmaceutical compositions. The amine functional polyamides are particularly useful in the treatment or prevention of mucositis and infection, specifically oral mucositis, surgical site infection, and lung infection associated with cystic fibrosis.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: GENZYME CORPORATION
    Inventors: Pradeep DHAL, Kanwen Yang, Robert J. Miller, S. Randall Holmes-Farley
  • Publication number: 20140219951
    Abstract: Amide compounds, amide polymers and compositions including amide compounds and amide polymers may be used to bind target ions, such as phosphorous-containing compounds in the gastrointestinal tract of animals. In some cases, the amide polymers may be amido-amine dendrimers that may be formed via a series of iterative reactions.
    Type: Application
    Filed: April 9, 2014
    Publication date: August 7, 2014
    Applicant: GENZYME CORPORATION
    Inventors: PRADEEP DHAL, S. Randall Holmes-Farley, Chad Huval, Steven C. Polomoscanik
  • Publication number: 20140044671
    Abstract: Disclosed is a polymer or physiologically acceptable salt thereof. The polymer comprises a polymerized multifunctional amine monomer. The amine monomer comprises at least two amine groups and at least two acyclic nitrogen atoms that are connected through a —CH2CH2— group, provided that the amine monomer is not ethylenediamine or diethylenetriamine. The disclosed polymers can be used to bind anions in subject in need of such treatment.
    Type: Application
    Filed: October 17, 2013
    Publication date: February 13, 2014
    Applicant: Genzyme Corporation
    Inventors: Chad C. Huval, Pradeep Dhal, S. Randall Holmes-Farley
  • Publication number: 20130266533
    Abstract: Sulfone-containing copolymers and copolymer networks and compositions including sulfone-containing copolymers and copolymer networks may be used to bind target ions, such as phosphorous-containing compounds in the gastrointestinal tract of animals. In some cases, sulfone-containing copolymers and copolymer networks may be derived from a multi-amine-monomer and a multifunctional sulfonyl-containing monomer comprising two or more amine-reactive groups.
    Type: Application
    Filed: January 28, 2013
    Publication date: October 10, 2013
    Inventors: Pradeep DHAL, Stephen Randall HOLMES-FARLEY, Chad HUVAL, Steven C. POLOMOSCANIK
  • Publication number: 20130243720
    Abstract: A pharmaceutical composition comprises a pharmaceutically acceptable ferrous iron compound; an amine polymer or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier. Alternatively, a pharmaceutica composition comprises a pharmaceutically acceptable ferrous iron compound and pharmaceutically acceptable carrier, wherein the ferrous iron compound is selected from the group consisting of iron(II) acetate, iron(II) citrate, iron(II) ascorbate, iron(II) oxalate, iron(II) oxide, iron(II) carbonate, iron(II) carbonate saccharated, iron(II) formate, iron(II) sulfate, iron(II) chloride, iron(II) acetylacetonate and combinations thereof. A method of treating a subject with hyperphosphatemia comprises administering to the subject an effective amount of a pharmaceutical composition as described above.
    Type: Application
    Filed: June 27, 2012
    Publication date: September 19, 2013
    Inventors: Chad Huval, Pradeep Dhal, Stephen Randall Holmes-Farley
  • Publication number: 20100135950
    Abstract: A pharmaceutical composition comprises a pharmaceutically acceptable ferrous iron compound; an amine polymer or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier. Alternatively, a pharmaceutical composition comprises a pharmaceutically acceptable ferrous iron compound and pharmaceutically acceptable carrier, wherein the ferrous iron compound is selected from the group consisting of iron(II) acetate, iron(II) citrate, iron(II) ascorbate, iron(II) oxalate, iron(II) oxide, iron(II) carbonate, iron(II) carbonate saccharated, iron(II) formate, iron(II) sulfate, iron(II) chloride, iron(II) acetylacetonate and combinations thereof. A method of treating a subject with hyperphosphatemia comprises administering to the subject an effective amount of a pharmaceutical composition as described above.
    Type: Application
    Filed: June 25, 2007
    Publication date: June 3, 2010
    Applicant: Genzyme Corporation
    Inventors: Chad Huval, Pradeep Dhal, Stephen Randall Holmes-Farley
  • Publication number: 20080085259
    Abstract: Disclosed is a polymer or physiologically acceptable salt thereof. The polymer comprises a polymerized multifunctional amine monomer. The amine monomer comprises at least two amine groups and at least two acyclic nitrogen atoms that are connected through a —CH2CH2— group, provided that the amine monomer is not ethylenediamine or diethylenetriamine. The disclosed polymers can be used to bind anions in subject in need of such treatment.
    Type: Application
    Filed: May 2, 2007
    Publication date: April 10, 2008
    Inventors: Chad Huval, Stephen Holmes-Farley, Pradeep Dhal
  • Publication number: 20080014288
    Abstract: A method of treating hyperphosphatemia in a subject comprises the step of administering to the subject an effective amount of a pharmaceutically acceptable zinc salt. A pharmaceutical composition comprises a pharmaceutically acceptable carrier; a pharmaceutically acceptable zinc salt; and a phosphate sequestrant. In one embodiment, the phosphate sequestrant is selected from a pharmaceutically acceptable lanthanum, calcium, magnesium and iron salt. In another embodiment, the phosphate sequestrant is an amine polymer, wherein the molar ratio of a zinc ion of the zinc salt to amine nitrogen atoms in the amine polymer is 0.1-3.0. The invention also includes a pharmaceutical composition comprising a pharmaceutically acceptable carrier; a pharmaceutically acceptable zinc salt; and an agent selected from the group consisting of a phosphate transport inhibitor, an HMG-CoA reductase inhibitor and an alkaline phosphatase inhibitor.
    Type: Application
    Filed: June 19, 2007
    Publication date: January 17, 2008
    Inventors: Chad Huval, Stephen Holmes-Farley, Pradeep Dhal, Edmund Sybertz
  • Publication number: 20070190021
    Abstract: The present invention relates to a method for removing bile acids from a patient and certain polymers of use in the method. The method comprises the step of administering to the patient a therapeutically effective amount of a polymer composition which includes a a poly(diallylamine)polymer which is substituted with hydrophobic groups. The hydrophobic groups can be a substituted or unsubstituted, straight chain or branched C3-C24-alkyl group, an aralkyl group or an aryl group.
    Type: Application
    Filed: August 1, 2006
    Publication date: August 16, 2007
    Inventors: Stephen Holmes-Farley, Pradeep Dhal, John Petersen
  • Publication number: 20060134062
    Abstract: Human obesity is a health problem affecting a significant proportion of the American population. Numerous methods of treating obesity have been developed, but all have serious drawbacks. The present invention discloses a novel class of polymers with either a sulfur atom or an electron withdrawing group between a polymer backbone and a pendant aryl boronic acid group. Polymers having such an electron withdrawing group have been found to be particularly effective in inhibiting lipase in vitro and in vivo. Methods of treating obesity and reducing absorption of fat are also disclosed.
    Type: Application
    Filed: November 19, 2003
    Publication date: June 22, 2006
    Inventors: Chad Huval, Xinhua Li, Stephen Holmes-Farley, Pradeep Dhal
  • Publication number: 20060128663
    Abstract: Disclosed are polymers comprising one or more phenyl boronate ester, boronamide or boronate thioester groups. The phenyl boronate ester, boronamide and boronate thioester groups are represented by one of the following structural formulas: Ar in Structural Formulas (I) and (II) is substituted or unsubstituted; and each Z is —O—, —NH— or —S— and is independently selected. Pharmaceutically acceptable salts of the polymer are also included. The aryl boronate ester, boronamide or boronate thioester can be cleaved to release the corresponding aryl boronic acid. Also disclosed are pharmaceutical compositions comprising the polymers of the present invention and a pharmaceutically acceptable carrier or diluent; and methods of treating a subject for obesity with the polymers of the present invention.
    Type: Application
    Filed: January 27, 2006
    Publication date: June 15, 2006
    Applicant: Genzyme Corporation
    Inventors: Stephen Holmes-Farley, W. Mandeville, Pradeep Dhal, Chad Huval, Xinhua Li, Steven Polomoscanik
  • Publication number: 20060128664
    Abstract: Disclosed is a phenyl boronic acid compound represented by Structural Formula (I): Ar is a substituted or unsubstituted aryl group. Z and Z? are independently —O—. —NH— or —S—. X is an electron withdrawing group. R is a substituted or unsubstituted straight chained hydrocarbyl group optionally comprising one or more amine, ammonium, ether, thioether or phenylene linking groups and Y is —H, an amine, —[NH—(CH2)q]r—NH2, halogen, —CF3, thiol, ammonium, alcohol, —COOH, —SO3H, —OSO3H or phosphonium group covalently bonded to the terminal position of R. Each —NH— in —[NH—(CH2)q]r—NH2 is optionally N-alkylated or N,N-dialkylated and —NH2 in —[NH—CH2)q]r—NH2 is optionally N-alkylated, N,N-dialkylated or N,N,N-trialkylated. q is an integer from 2 to about 10 and r is an integer from 1 to about 5.
    Type: Application
    Filed: January 31, 2006
    Publication date: June 15, 2006
    Applicant: Genzyme Corporation
    Inventors: Stephen Holmes-Farley, W. Mandeville, Pradeep Dhal, Chad Huval, Xinhua Li
  • Publication number: 20050107336
    Abstract: Disclosed is a phenyl boronic acid compound represented by Structural Formula (I): Ar is a substituted or unsubstituted aryl group. Z and Z? are independently —O—. —NH— or —S—. X is an electron withdrawing group. R is a substituted or unsubstituted straight chained hydrocarbyl group optionally comprising one or more amine, ammonium, ether, thioether or phenylene linking groups and Y is —H, an amine, —[NH—(CH2)q]r—NH2, halogen, —CF3, thiol, ammonium, alcohol, —COOH, —SO3H, —OSO3H or phosphonium group covalently bonded to the terminal position of R. Each —NH— in —[NH—(CH2)q]r—NH2 is optionally N-alkylated or N,N-dialkylated and —NH2 in —[NH—(CH2)q]r—NH2 is optionally N-alkylated, N,N-dialkylated or N,N,N-trialkylated. q is an integer from 2 to about 10 and r is an integer from 1 to about 5.
    Type: Application
    Filed: December 30, 2004
    Publication date: May 19, 2005
    Inventors: Stephen Holmes-Farley, W. Mandeville, Pradeep Dhal, Chad Huval, Xinhua Li
  • Patent number: 5310648
    Abstract: The invention provides an imprinted matrix which exhibits selective binding interactions through metal chelates with a predetermined molecule or biological particle. Also provided is a preformed, fluid-imprinted matrix having sufficient rigidity to maintain selective binding interaction with a predetermined molecule or biological particle through interactive moieties. Methods for producing such matrices are additionally provided.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: May 10, 1994
    Assignee: California Institute of Technology
    Inventors: Frances H. Arnold, Pradeep Dhal, Deborah Shnek, Sean Plunkett