Patents by Inventor P. Pathak

P. Pathak 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: 20110212077
    Abstract: The invention provides biaryl meta-pyrimidine compounds having the general structure (A). The pyrimidine compounds of the invention are capable of inhibiting kinases, such as members of the Jak kinase family, and various other specific receptor and non-receptor kinases.
    Type: Application
    Filed: August 24, 2010
    Publication date: September 1, 2011
    Applicant: TargeGen, Inc.
    Inventors: Glenn Noronha, Chi Ching Mak, Jianguo Cao, Joel Renick, Andrew McPherson, Binqi Zeng, Ved P. Pathak, Daniel L. Lohse, John D. Hood, Richard M. Soll
  • Publication number: 20110177150
    Abstract: Novel implantable tissue fixation methods and compositions are disclosed. Methods and compositions of tissue, fixed using polymeric and/or variable length crosslinks, and di- or polymercapto compounds are described. Also described are the methods and compositions wherein the tissue is fixed using biodegradable crosslinkers. Methods and compositions for making radio-opaque tissue are also described. Methods and compositions to obtain a degradable implantable tissue-synthetic biodegradable polymer composite are also described. Compositions and methods of incorporating substantially water-insoluble bioactive compounds in the implantable tissue are also disclosed. The use of membrane-like implantable tissue to make an implantable drug delivery patch are also disclosed. Also described are the compositions and methods to obtain a coated implantable tissue. Medical applications implantable tissue such as heart valve bioprosthesis, vascular grafts, meniscus implant, drug delivery patch are also disclosed.
    Type: Application
    Filed: March 29, 2011
    Publication date: July 21, 2011
    Inventors: Chandraskekhar P. Pathak, Sanjav M. Thigle
  • Publication number: 20110129574
    Abstract: Systems and methods for filling a fleshy fruit or vegetable with a filler are described. Embodiments include tool having an expandable member that is expandable to an expanded position to make a cavity in the fruit and collapsible to a collapsed position for withdrawal from the fruit, with the expandable member in the expanded state comprising a cross-section that is larger than the maximum diameter of the tool in the collapsed position. A cavity may be created without substantially affecting the natural visual appearance of the fruit or vegetable. Fillers and filling methods are disclosed.
    Type: Application
    Filed: November 29, 2010
    Publication date: June 2, 2011
    Inventors: Chandrashekhar P. Pathak, Nivedita C. Pathak
  • Publication number: 20110125253
    Abstract: A graft device comprising a layer of synthetic non-metallic material having a first surface and a second surface spaced apart from the first surface. The device further, includes a radiopaque marker at least partially embedded in the layer.
    Type: Application
    Filed: November 9, 2006
    Publication date: May 26, 2011
    Applicant: C.R. BARD INC.
    Inventors: R. Michael Casanova, Chandrashekhar P. Pathak
  • Patent number: 7919112
    Abstract: Novel implantable tissue fixation methods and compositions are disclosed. Methods and compositions of tissue, fixed using polymeric and/or variable length crosslinks, and di- or polymercapto compounds are described. Also described are the methods and compositions wherein the tissue is fixed using biodegradable crosslinkers. Methods and compositions for making radio-opaque tissue are also described. Methods and compositions to obtain a degradable implantable tissue-synthetic biodegradable polymer composite are also described. Compositions and methods of incorporating substantially water-insoluble bioactive compounds in the implantable tissue are also disclosed. The use of membrane-like implantable tissue to make an implantable drug delivery patch are also disclosed. Also described are the compositions and methods to obtain a coated implantable tissue. Medical applications implantable tissue such as heart valve bioprosthesis, vascular grafts, meniscus implant, drug delivery patch are also disclosed.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: April 5, 2011
    Assignee: Pathak Holdings, LLC
    Inventors: Chandraskekhar P. Pathak, Sanjay M. Thigle
  • Publication number: 20110076315
    Abstract: The present application discusses techniques and structures that incorporate calcium salts in the luminal surface of grafts. In an embodiment, a graft, stent-graft or TIPS may incorporate bio-compatible calcium salt, which is essentially non-osteoinductive in nature, on the surfaces of the implantable device.
    Type: Application
    Filed: June 8, 2006
    Publication date: March 31, 2011
    Applicant: C.R Bard, Inc.
    Inventors: R. Michael Casanova, Chandrashekhar P. Pathak
  • Publication number: 20100290995
    Abstract: Radio-opaque biodegradable compositions are formed by modifying terminal groups of synthetic and natural biodegradable polymers such as polylactones with iodinated moieties. The biodegradable property of the compositions renders them suitable for use in medical field such as drug delivery, imaging. Compounds disclosed in this invention exist as neat liquid. Certain compositions disclosed in this invention form hydrophobic iodine rich domains when dissolved in water, such domains provide better contrasting properties as well as ability to dissolve hydrophobic bioactive drugs. Certain iodinated moieties disclosed in the invention are capable of cross linking natural proteins in situ in presence of suitable catalysts and co-catalysts.
    Type: Application
    Filed: July 21, 2010
    Publication date: November 18, 2010
    Inventors: Chandrashekhar P. Pathak, Sanjay M. Thigle
  • Patent number: 7825246
    Abstract: The invention provides biaryl meta-pyrimidine compounds having the general structure (A). The pyrimidine compounds of the invention are capable of inhibiting kinases, such as members of the Jak kinase family, and various other specific receptor and non-receptor kinases.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: November 2, 2010
    Assignee: TargeGen, Inc.
    Inventors: Glenn Noronha, Chi Ching Mak, Jianguo Cao, Joel Renick, Andrew McPherson, Binqi Zeng, Ved P. Pathak, Daniel L. Lohse, John D. Hood, Richard M. Soll
  • Publication number: 20100268321
    Abstract: A method of incorporating drugs into an implantable medical device. In one variation, water insoluble drugs are used to form crystals within the porous structure of the device. Upon implantation, the drug crystals dissolve slowly and release the drug into the surrounding tissue. In one example, a water insoluble drug is crystallized within the pores of an ePTFE vascular graft.
    Type: Application
    Filed: September 5, 2006
    Publication date: October 21, 2010
    Applicant: C R BARD, INC.
    Inventors: John D. McDermott, Robert Michael, Chandrashekhar P. Pathak
  • Patent number: 7790141
    Abstract: Radio-opaque biodegradable compositions are formed by modifying terminal groups of synthetic and natural biodegradable polymers such as polylactones with iodinated moieties. The biodegradable property of the compositions renders them suitable for use in medical field such as drug delivery, imaging. Compounds disclosed in this invention exist as neat liquid. Certain compositions disclosed in this invention form hydrophobic iodine rich domains when dissolved in water, such domains provide better contrasting properties as well as ability to dissolve hydrophobic bioactive drugs. Certain iodinated moieties disclosed in the invention are capable of cross linking natural proteins in situ in presence of suitable catalysts and co-catalysts.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: September 7, 2010
    Assignee: Pathak Holdings, LLC
    Inventors: Chandrashekhar P. Pathak, Sanjay M. Thigle
  • Publication number: 20100168802
    Abstract: An external fixator implant screw with an intercalated head, of which one embodiment for lag screw mode has a spherical head, and a partial thread. The spherical head in countersunk bone exerts concentric wide contact on insertion at various angles to surface. Optional canalization of central rod allows guide wire technique and optional mobility of head allows variable shaft length between head and thread. Another embodiment for use in basic implant mode, in a single bone fragment, at right angles to bone surface, has a conical head with limited basal contact on bone, the head being integrated to a solid rod and is fully threaded from head to leading tip. In both embodiments, the load transmission is renewable from outside in case of loosening, without reopening any wound. The implant is made of biocompatible material.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 1, 2010
    Inventor: Kartikeya P. Pathak
  • Publication number: 20100069613
    Abstract: A method of concentrating proteins from whole blood comprising exposing whole blood to a covalently crosslinked hydrogel to remove water from the blood into the hydrogel to thereby concentrate the proteins in the whole blood. The hydrogel may absorb, for example, 50% or 90% of the water from the blood while excluding proteins with a weight of more than about 15,000 Daltons. In some embodiments, the hydrogels are dry, sterile, and spherical.
    Type: Application
    Filed: September 9, 2009
    Publication date: March 18, 2010
    Inventor: Chandrashekhar P. Pathak
  • Publication number: 20100057196
    Abstract: A wall, for example the wall of a vascular graft, has multiple channels within it. The channels may be used to hold drugs or reinforcing fibers. The channels may have a predetermined roughness. The channels may be formed by coextrusion using a soluble material, for example, to define the channels and then dissolving them to open the channels in the extrudate.
    Type: Application
    Filed: October 12, 2007
    Publication date: March 4, 2010
    Applicant: C.R. Bard, Inc.
    Inventor: Chandrashekhar P. Pathak
  • Patent number: 7666212
    Abstract: An external fixator implant screw with an intercalated head, of which one embodiment for lag screw mode has a spherical head, and a partial thread. The spherical head in countersunk bone exerts concentric wide contact on insertion at various angles to surface. Optional canalization of central rod allows guide wire technique and optional mobility of head allows variable shaft length between head and thread. Another embodiment for use in basic implant mode, in a single bone fragment, at right angles to bone surface, has a conical head with limited basal contact on bone, the head being integrated to a solid rod and is fully threaded from head to leading tip. In both embodiments, the load transmission is renewable from outside in case of loosening, without reopening any wound. The implant is made of biocompatible material.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: February 23, 2010
    Inventor: Kartikeya P. Pathak
  • Publication number: 20100030072
    Abstract: An intracorporeal marker for marking a site within living tissue of a host having a body of porous hydroxyapatite whose physical properties permit the body to be distinguished from human soft tissue under visualization using ultrasonic and radiation imaging modalities.
    Type: Application
    Filed: December 12, 2007
    Publication date: February 4, 2010
    Inventors: R. Michael Casanova, Dnyanesh A. Talpade, Chandrashekhar P. Pathak
  • Publication number: 20090311338
    Abstract: Some aspects of this disclosure relate to a method for crosslinking a biological fluid comprising combining a biological fluid with a crosslinker to covalently crosslink proteins endogenous to the biological fluid to form a crosslinked gel. Examples of a biological fluid are blood, plasma, or serum.
    Type: Application
    Filed: August 24, 2009
    Publication date: December 17, 2009
    Inventors: Chandrashekhar P. Pathak, Amarpreet S. Sawhney, James H. Dreher
  • Patent number: 7605232
    Abstract: A method of concentrating proteins from whole blood comprising exposing whole blood to covalently crosslinked hydrogel to remove water from the blood into the hydrogel to thereby concentrate the proteins in the whole blood. The hydrogel may absorb, for example, 50% or 90% of the water from the blood while excluding proteins with a weight of more than about 15,000 Daltons. In some embodiment, the hydrogels are dry, sterile, and spherical.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: October 20, 2009
    Assignee: Incept LLC
    Inventor: Chandrashekhar P. Pathak
  • Patent number: 7597882
    Abstract: Some aspects of this disclosure relate to a method for crosslinking a biological fluid comprising combining a biological fluid with a crosslinker to covalently crosslink proteins endogenous to the biological fluid to form a crosslinked gel. Examples of a biological fluid are blood, plasma, or serum.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: October 6, 2009
    Assignee: Incept LLC
    Inventors: Chandrashekhar P. Pathak, Amarpreet S. Sawhney, James H. Dreher
  • Patent number: 7592418
    Abstract: Biocompatible crosslinked polymers, and methods for their preparation and use, are disclosed in which the biocompatible crosslinked polymers are formed from water soluble precursors having electrophilic and nucleophilic functional groups capable of reacting and crosslinking in situ. Methods for making the resulting biocompatible crosslinked polymers biodegradable or not are provided, as are methods for controlling the rate of degradation. The crosslinking reactions may be carried out in situ on organs or tissues or outside the body. Applications for such biocompatible crosslinked polymers and their precursors include controlled delivery of drugs, prevention of post-operative adhesions, coating of medical devices such as vascular grafts, wound dressings and surgical sealants. Visualization agents may be included with the crosslinked polymers.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: September 22, 2009
    Assignee: Incept LLC
    Inventors: Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Peter G. Edelman
  • Publication number: 20090171436
    Abstract: A device and method provides a graft having a layer of synthetic non-metallic material including a first surface and a second surface spaced apart from the first surface. The device further includes a beading coupled to the layer and a radiopaque agent coupled to the beading. Another device and method provides a implantable prosthesis having a stent frame, a first inner layer and a second outer layer defining a central axis. The implantable prosthesis further includes a beading coupled to at least one the layers.
    Type: Application
    Filed: November 9, 2006
    Publication date: July 2, 2009
    Inventors: R. Michael Casanova, P. Pathak