Patents by Inventor Nandu Deorkar

Nandu Deorkar 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).

  • Chromatographic Media
    Publication number: 20080203029
    Abstract: This invention concerns the preparation and use of novel polymeric chromatographic media and preferably mixed mode polymeric chromatographic media. In accordance with the present invention, polymeric media is prepared using polymeric particles derivatized with polyethyleneimine, and preferably such polyethyleneimine derivatized polymeric particles further functionalized with appropriate reactants. The polymeric chromatographic media is especially useful for bioseparations.
    Type: Application
    Filed: December 16, 2005
    Publication date: August 28, 2008
    Inventors: Nandu Deorkar, Robert C. Buss, Joseph M. Mladosich, Paul A. Bouis
  • Preparation of Ultrapure Polymeric Articles
    Publication number: 20070249804
    Abstract: Ultrapure olefinic polymeric articles of manufacture can be prepared by a process comprising: providing olefinic polymeric material containing impurities, subjecting the olefinic polymeric material to supercritical CO2 at a pressure of at least about 4000 psi (281.23 kg/cm2) at a temperature of from about 35° C. and above, to extract the impurities from the olefinic polymeric material and produce ultrapure olefinic polymeric material, and molding ultrapure articles of manufacture from the ultrapure, olefinic polymeric material.
    Type: Application
    Filed: July 6, 2005
    Publication date: October 25, 2007
    Applicants: MALLINCKRODT BAKER INC., MALLINCKRODT BAKER, INC.
    Inventors: Nandu Deorkar, Paul Bouis
  • Method of removing heavy metal ions from a liquid with chemically active ceramic compositions with an hydroxyquinoline moiety
    Patent number: 5817239
    Abstract: A composite material useful for removing heavy metal ions from solutions such as aqueous waste streams comprises a ceramic inorganic support such as silica gel which is covalently bonded, through a silane coupling agent, to a hydroxyquinoline ligand or such a support which has been reacted with a silylating agent and then on which is deposited a hydroxyquinoline ligand.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: October 6, 1998
    Assignee: Syracuse University
    Inventors: Lawrence L. Tavlarides, Nandu Deorkar
  • Method of removing heavy metal ions from a liquid with chemically active ceramic compositions with a thiol and/or amine moiety
    Patent number: 5814226
    Abstract: Composite materials useful for removing metal ions from solutions such as aqueous waste streams comprise an inorganic ceramic support such as silica gel that has active hydroxyl groups. The support is reacted with a silane linking compound or with a titanizing agent. A chelating compound, which can be a thiol or an amine, is attached to the silane or to titanium atoms of the titanized surface of the support.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: September 29, 1998
    Assignee: Syracuse University
    Inventors: Lawrence L. Tavlarides, Nandu Deorkar
  • Method of removing heavy metal ions from a liquid with chemically active ceramic compositions with a pyrogallol moiety
    Patent number: 5779906
    Abstract: Novel ceramic compositions are used for removing metal ions by chelation from solutions such as aqueous waste streams. The compositions are formed by covalently bonding to terminal hydroxy groups of a ceramic inorganic carrier or support a substituted silane linking group attached to a chelating agent or ligand which is pyrogallol or a derivative thereof.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: July 14, 1998
    Assignee: Syracuse University
    Inventors: Lawrence L. Tavlarides, Nandu Deorkar
  • Chemically active ceramic compositions with a phospho-acid moiety
    Patent number: 5690832
    Abstract: Novel composite materials useful for removing heavy metal ions from solutions, such as aqueous waste streams, comprise an inorganic ceramic support, such as silica gel, having terminal hydroxy groups, to the oxygen of which a ligand is covalently bonded through a silane coupling agent, the ligand being a phosphorous or thiophosphorous based acid moiety.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: November 25, 1997
    Assignee: Syracuse University
    Inventors: Lawrence L. Tavlarides, Nandu Deorkar
  • Chemically active ceramic compositions with an hydroxyquinoline moiety
    Patent number: 5668079
    Abstract: A composite material useful for removing heavy metal ions from solutions such as aqueous waste streams comprises a ceramic inorganic support such as silica gel which is covalently bonded, through a silane coupling agent, to a hydroxyquinoline ligand or such a support which has been reacted with a silylating agent and then on which is deposited a hydroxyquinoline ligand.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: September 16, 1997
    Assignee: Syracuse University
    Inventors: Lawrence L. Tavlarides, Nandu Deorkar
  • Chemically active ceramic compositions with a pyrogallol moiety
    Patent number: 5624881
    Abstract: Novel ceramic compositions are used for removing metal ions by chelation from solutions such as aqueous waste streams. The compositions are formed by covalently bonding to terminal hydroxy groups of a ceramic inorganic carrier or support a substituted silane linking group attached to a chelating agent or ligand which is pyrogallol or a derivative thereof.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: April 29, 1997
    Assignee: Syracuse University
    Inventors: Lawrence L. Tavlarides, Nandu Deorkar
  • Chemically active ceramic compositions with a thiol and/or amine moiety
    Patent number: 5616533
    Abstract: Composite materials useful for removing metal ions from solutions such as aqueous waste streams comprise an inorganic ceramic support such as silica gel that has active hydroxyl groups. The support is reacted with a silane linking compound or with a titanizing agent. A chelating compound, which can be a thiol or an amine, is attached to the silane or to titanium atoms of the titanized surface of the support.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: April 1, 1997
    Assignee: Syracuse University
    Inventors: Lawrence L. Tavlarides, Nandu Deorkar
  • Chemically active ceramic compositions with a phospho-acid moiety
    Patent number: 5612275
    Abstract: Novel composite materials useful for removing heavy metal ions from solutions, such as aqueous waste streams, comprise an inorganic ceramic support, such as silica gel, having terminal hydroxy groups, to the oxygen of which a ligand is covalently bonded through a silane coupling agent, the ligand being a phosphorous or thiophosphorous based acid moiety.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: March 18, 1997
    Assignee: Syracuse University
    Inventors: Lawrence L. Tavlarides, Nandu Deorkar