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).

  • Patent number: 11661258
    Abstract: A packaging system that maintains the free flowing characteristic of solid materials contained therein. The packaging system includes a container, a cover, a vapor permeable bag, a vapor impermeable liner and at least two desiccant snakes. The vapor permeable bag has an opening for receiving solid materials and is formed from cloth or continuous fibers of high-density polyethylene that are randomly distributed and non-directional. The vapor impermeable liner surrounds the vapor permeable bag and provides a moisture barrier. The desiccant snakes are disposed between the vapor permeable bag and the liner. Each snake includes two or more desiccant packages formed from a vapor permeable material through which moisture can freely pass. The desiccant packages contain clay, silica, or molecular sieves.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 30, 2023
    Assignee: AVANTOR PERFORMANCE MATERIALS, LLC
    Inventors: James Farina, Nandu Deorkar
  • Publication number: 20230114372
    Abstract: The present invention relates to a novel polypeptide affinity ligand coupled to solid supports and affinity purification of IgG antibodies. The invention is comprised of (1) the design, generation, and purification of polypeptide ligands, (2) coupling of a polypeptide affinity ligand to a solid support matrix, (3) purification of IgG (polyclonal and monoclonal antibodies), and (4) cleaning and reuse of polypeptide supported solid matrix.
    Type: Application
    Filed: February 5, 2021
    Publication date: April 13, 2023
    Applicant: AVANTOR PERFORMANCE MATERIALS, LLC
    Inventors: Quanxuan ZHANG, Joshua SUMOSKI, Jungmin OH, Hong LI, Jonathan FURA, Nandu DEORKAR
  • Publication number: 20170198002
    Abstract: Provided herein is a highly pure carbohydrate composition, and a method of making a highly pure carbohydrate composition. The method includes passing an aqueous carbohydrate solution through an anion exchange chromatography column including a polyethyleneimine (PEI) chromatographic media to obtain a purified solution, and isolating a highly pure carbohydrate composition from the purified solution.
    Type: Application
    Filed: December 23, 2014
    Publication date: July 13, 2017
    Applicant: Avantor Performance Materials, Inc.
    Inventors: Bhaktavachalam THIYAGARAJAN, Martina COX, Nandu DEORKAR
  • Publication number: 20170112768
    Abstract: An improved excipient comprising substantially homogeneous particles of a compressible, high functionality granular microcrystalline cellulose based excipient is provided. The improved excipient comprises microcrystalline cellulose and a binder, and optionally a disintegrant, and is formed by spraying a homogeneous slurry of the components. The excipient provides enhanced flowability/good flow properties, excellent/high compactibility, and increased API loading and blendability as compared to the individual components, and as compared to conventional excipients formed from the same materials. The improved excipient has strong intraparticle bonding bridges between the components, resulting in a unique structural morphology including significant open structures or hollow pores. The presence of these pores provides a surface roughness that is the ideal environment for improved blending with an API.
    Type: Application
    Filed: January 4, 2017
    Publication date: April 27, 2017
    Applicant: AVANTOR PERFORMANCE MATERIALS, LLC
    Inventors: Nandu DEORKAR, James FARINA, Liliana MIINEA, Sameer RANDIVE
  • Publication number: 20170113864
    Abstract: A package system for maintaining the physicochemical integrity of the contents of the package system that includes: an inner bag formed from a gas and/or moisture permeable material, an outer bag formed from an impermeable polymer material, a discharge port that provides access to the interior of the outer bag; and a desiccant or gas scavenging material. The first end of the outer bag sealingly surrounds the exterior wall of the discharge port. The second end of the inner bag is sealed closed and the desiccant or gas scavenging material is disposed in an isolated compartment. The second end of the outer bag is sealed closed to isolate the interior from the environment exterior to the package system.
    Type: Application
    Filed: March 27, 2015
    Publication date: April 27, 2017
    Applicant: AVANTOR PERFORMANCE MATERIALS, INC.
    Inventors: James Farina, Evon Bolessa, Nandu Deorkar
  • Publication number: 20140263011
    Abstract: Chromatographic media of porous media particles derivatized with allylamine or polyallylamine obtained directly or through intermolecular polymerization on the surface thereof and such media functionalized with further functionalization groups. Such media are particularly useful for separating biomolecules.
    Type: Application
    Filed: May 3, 2012
    Publication date: September 18, 2014
    Applicant: Avantor Performance Materials, Inc.
    Inventors: Bhaktavachalam Thiyagarajan, Wei Guo, Nandu Deorkar
  • Publication number: 20140194543
    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: October 29, 2013
    Publication date: July 10, 2014
    Inventors: Nandu Deorkar, Robert C. Buss, Joseph M. Mladosich, Paul A. Bouis
  • Publication number: 20120283419
    Abstract: A flow-through process for separating protein monomer from aggregates of that protein in a solution containing both protein monomer and aggregates of that protein, the process includes the steps of 1) contacting the solution at a pH of from 4 to 7 with a weak anion exchange media comprised of multiple primary, secondary and/or tertiary amine functionalization groups whereby the protein monomer flows through the media without binding thereto and the aggregates are retained on the media, and 2) collecting the flow-through as purified protein monomer.
    Type: Application
    Filed: November 3, 2011
    Publication date: November 8, 2012
    Inventors: Bhaktavachalam Thiyagarajan, Wei Guo, Nandu Deorkar
  • Publication number: 20120100211
    Abstract: A low dose API pharmaceutical tablet having excellent content uniformity is provided. The tablet is formed by spray coating a support excipient with the API. The resulting composition is suitable for direct compression tablet formulation without the need for an additional granulation step to uniformly coat the API onto the support excipient. The support excipient comprises microcrystalline cellulose, a binder and a disintegrant, and is formed by spraying a homogeneous slurry of the support excipient components.
    Type: Application
    Filed: July 12, 2010
    Publication date: April 26, 2012
    Inventors: James Farina, Nandu Deorkar, Liliana Miinea
  • Publication number: 20110288146
    Abstract: An improved excipient comprising substantially homogeneous particles of a compressible, high functionality granular microcrystalline cellulose based excipient is provided. The improved excipient comprises microcrystalline cellulose and a binder, and optionally a disintegrant, and is formed by spraying a homogeneous slurry of the components. The excipient provides enhanced flowability/good flow properties, excellent/high compactibility, and increased API loading and blendability as compared to the individual components, and as compared to conventional excipients formed from the same materials. The improved excipient has strong intraparticle bonding bridges between the components, resulting in a unique structural morphology including significant open structures or hollow pores. The presence of these pores provides a surface roughness that is the ideal environment for improved blending with an API.
    Type: Application
    Filed: November 16, 2009
    Publication date: November 24, 2011
    Inventors: Nandu Deorkar, James Farina, Liliana Miinea, Sameer Ranadive
  • Publication number: 20110229527
    Abstract: An improved excipient comprising substantially homogeneous particles of a compressible, high functionality granular dibasic calcium phosphate based excipient is provided. The improved excipient comprises dibasic calcium phosphate, a binder and a disintegrant, and is formed by spraying a homogeneous slurry of the components. The improved excipient provides enhanced flowability/good flow properties, an increased API loading and blendability and higher compactibility as compared to the individual components, and as compared to excipients formed from the same materials by conventional methods. The improved excipient has strong intraparticle bonding bridges between the components, resulting in a unique structural morphology including significant open structures or hollow pores. The presence of these pores provides a surface roughness that is the ideal environment for improved blending with an API.
    Type: Application
    Filed: November 13, 2009
    Publication date: September 22, 2011
    Inventors: Nandu Deorkar, James Farina, Liliana Miinea, Sameer Randive
  • Publication number: 20110220575
    Abstract: A reverse phase chromatographic media selected from media of the formula: [X—C6H4—(O)m—(CH2)n]q—Z and hydrophobic end-capped media of said formula, wherein n is a numeral of from 1 to 4, and m is 0 or 1, and when m is 1 X is selected from the group H, an alkyl group having from 1 to 6 carbon atoms and a phenyl group, and when m is 0 then X is selected from an alkoxy group having from 1 to 6 carbon atoms and a phenoxy group, Z is the backbone of a silica or hydrophilic polymer chromatographic support, and q is a number equal to the number of ligands attached to the backbone of the silica or hydrophobic polymer chromatographic support, with the proviso that when said reverse phase chromatographic media of the formula is not end-capped with hydrophobic groups X is not H when m=1.
    Type: Application
    Filed: November 16, 2009
    Publication date: September 15, 2011
    Inventors: Nandu Deorkar, Bhaklavachalam Thiyagarajan
  • Publication number: 20110136921
    Abstract: A sustained release composition comprising spray dried particles of at least one polysaccharide gum and at least one polyhydric sugar alcohol, as well as methods of making the sustained released composition are provided. A sustained release pharmaceutical solid dosage form, and a method of making the solid dosage form by compression are also provided.
    Type: Application
    Filed: August 6, 2009
    Publication date: June 9, 2011
    Inventors: Nilesh Tanhaji Dumbre, Amelia Makarand Avachat, Nandu Deorkar, James Farina, Liliana Miinea
  • Publication number: 20110092598
    Abstract: An improved excipient comprising substantially homogeneous particles of a compressible, high functionality granular microcrystalline cellulose based excipient is provided. The improved excipient comprises microcrystalline cellulose, a binder and a disintegrant, and is formed by spraying a homogeneous slurry of the components. The excipient provides enhanced flowability/good flow properties, excellent/high compactibility, and increased API loading and blendability as compared to the individual components, and as compared to conventional excipients formed from the same materials. The improved excipient has strong intraparticle bonding bridges between the components, resulting in a unique structural morphology including significant open structures or hollow pores. The presence of these pores provides a surface roughness that is the ideal environment for improved blending with an API.
    Type: Application
    Filed: October 7, 2008
    Publication date: April 21, 2011
    Inventors: Nandu Deorkar, James Farina, Liliana Miinea, Sameer Randive
  • Publication number: 20100261842
    Abstract: Purification of vegetarian (non-animal derived) Protein A using a multidimensional purification process to remove undesirable non-animal derived component impurities in the Protein A from the non-animal fermentation media used to produce the Protein A so as to produce a vegetarian Protein A free of animal-origin components and essentially free of components derived from non-animal derived growth media.
    Type: Application
    Filed: September 14, 2006
    Publication date: October 14, 2010
    Inventors: Nandu Deorkar, Steve Magee, Wei Guo
  • Publication number: 20100056645
    Abstract: Buffered antimicrobial solutions of benzyl alcohol and ethanol and their use for short or long term storage of chromatographic solids.
    Type: Application
    Filed: December 10, 2007
    Publication date: March 4, 2010
    Inventors: Nandu Deorkar, Steve Magee
  • Publication number: 20100055180
    Abstract: An improved excipient comprising substantially homogeneous particles of a compressible, high functionality granular microcrystalline cellulose based excipient is provided. The improved excipient comprises microcrystalline cellulose and a binder, and optionally a disintegrant, and is formed by spraying a homogeneous slurry of the components. The excipient provides enhanced flowability/good flow properties, excellent/high compactibility, and increased API loading and blendability as compared to the individual components, and as compared to conventional excipients formed from the same materials. The improved excipient has strong intraparticle bonding bridges between the components, resulting in a unique structural morphology including significant open structures or hollow pores. The presence of these pores provides a surface roughness that is the ideal environment for improved blending with an API.
    Type: Application
    Filed: November 16, 2009
    Publication date: March 4, 2010
    Applicant: Mallinckrodt Baker, Inc.
    Inventors: Nandu Deorkar, James Farina, Liliana Miinea, Sameer Randive
  • Publication number: 20100012565
    Abstract: A low cost re-usable end-cap for disposable chromatographic columns or solid phase extraction cartridges that simultaneously provide sealing of the column and axial compression, and chromatography columns and solid phase extraction cartridges employing such re-usable end caps.
    Type: Application
    Filed: September 23, 2009
    Publication date: January 21, 2010
    Applicant: Mallinckrodt Baker, Inc.
    Inventors: Nandu Deorkar, Paul A. Bouis
  • Publication number: 20090001008
    Abstract: A low cost re-usable end-cap for disposable chromatographic columns or solid phase extraction cartridges that simultaneously provide sealing of the column and axial compression, and chromatography columns and solid phase extraction cartridges employing such re-usable end caps.
    Type: Application
    Filed: January 4, 2007
    Publication date: January 1, 2009
    Inventors: Nandu Deorkar, Paul A. Bouis
  • Patent number: 7470767
    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: Grant
    Filed: July 6, 2005
    Date of Patent: December 30, 2008
    Assignee: Mallinckrodt Baker, Inc.
    Inventors: Nandu Deorkar, Paul Bouis