Patents by Inventor Lakshman R. Sehgal

Lakshman R. Sehgal 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: 9388427
    Abstract: A method for treating a renal disease in a subject is disclosed. The method includes administering into a kidney of the subject with an effective amount of a gutless adenoviral vector containing a polynucleotide encoding a therapeutic agent. The gutless adenoviral vector contains the nucleotide sequence of SEQ ID NO:13 or SEQ ID NO:15 and expresses the therapeutic agent in a kidney tissue of the subject.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: July 12, 2016
    Assignee: BIOVEC, LLC
    Inventors: Lakshman R. Sehgal, Jonathan Wong
  • Patent number: 9353383
    Abstract: A method for treating a renal disease in a subject is disclosed. The method includes administering into a kidney of the subject with an effective amount of a gutless adenoviral vector containing a polynucleotide encoding a therapeutic agent. The gutless adenoviral vector contains the nucleotide sequence of SEQ ID NO:13 or SEQ ID NO:15 and expresses the therapeutic agent in a kidney tissue of the subject.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: May 31, 2016
    Assignee: BIOVEC, LLC
    Inventors: Lakshman R. Sehgal, Jonathan Wong
  • Patent number: 9095818
    Abstract: The present invention relates to methods for removing antiplatelet agents and anticoagulants from a platelet preparation. In one embodiment, the method includes the step of flowing the platelet preparation through a filtering tube comprising a filtering membrane and separating the antiplatelet agents and anticoagulants from the platelet preparation by tangential flow filtration. In another embodiment, the method includes the step of passing the platelet preparation through porous material that specifically binds to the antiplatelet agents and anticoagulants.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: August 4, 2015
    Assignee: BIOVEC TRANSFUSION, LLC
    Inventor: Lakshman R. Sehgal
  • Publication number: 20150056604
    Abstract: Compositions and methods for maintaining platelet functionality and extending the shelf-life of platelets are described. Platelet preservation compositions include a photosensitizer and a plurality of platelet preservation agents. A method for preserving platelets and extending their shelf-life includes irradiating a platelet mixture containing a photosensitizer under conditions sufficient to activate the photosensitizer and inactivate microbes in the platelet mixture to form a microbe-depleted platelet preparation. A plurality of platelet preservation agents are added to the microbe-depleted platelet preparation for extending the platelet shelf-life. Prior to transfusion, the photosensitizer and platelet preservation agents can be removed by diafiltration and/or the use of compound adsorption devices.
    Type: Application
    Filed: October 9, 2014
    Publication date: February 26, 2015
    Inventor: Lakshman R. SEHGAL
  • Patent number: 8927203
    Abstract: The present invention relates to compositions and methods for storing platelets to preserve the function and freshness of the platelets. More particularly, the present invention relates to the use of a preservative composition having an antiplatelet agent, an anticoagulant, and an oxygen carrier, for maintaining the freshness of platelets. Additionally, the composition may also contain an ultra-short acting broad spectrum anti-microbial agents. The preservative composition may be used to store platelets in a liquid state, a frozen state, or a freeze-dried state.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: January 6, 2015
    Assignee: Biovec Transfusion, LLC
    Inventor: Lakshman R. Sehgal
  • Patent number: 8877060
    Abstract: The present application relates to a method for removing pathogens from a transfusion grade platelet composition. The method comprises the steps of passing a platelet preparation through a first tangential flow filtration (TFF) device having a TFF filter, and collecting a retentate from the TFF device, wherein the retentate comprises filtered platelets to be used for transfusion. The platelet preparation comprises a platelet activation inhibitor and an anti-coagulant. During the TFF process, a diafiltration solution is added to the retentate to maintain the volume of the platelets.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: November 4, 2014
    Assignee: Biovec Transfusion, LLC
    Inventor: Lakshman R. Sehgal
  • Patent number: 8715920
    Abstract: A platelet preservation composition is disclosed. The composition comprises a photosensitizer, an inhibitor of platelet activation, and/or an anticoagulant. The preservation composition allows inactivation of pathogens in a platelet preparation while maintaining the functionality of the platelets.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: May 6, 2014
    Assignee: Biovec Transfusion, LLC
    Inventor: Lakshman R. Sehgal
  • Patent number: 8697347
    Abstract: The present invention relates to compositions and methods for storing platelets to preserve the function and freshness of the platelets. More particularly, the present invention relates to the use of a preservative composition having an antiplatelet agent, an anticoagulant, and an oxygen carrier, for maintaining the freshness of platelets. Additionally, the composition may also contain an ultra-short acting broad spectrum anti-microbial agents. The preservative composition may be used to store platelets in a liquid state, a frozen state, or a freeze-dried state.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: April 15, 2014
    Assignee: Biovec Transfusion, LLC
    Inventor: Lakshman R. Sehgal
  • Patent number: 8470521
    Abstract: The present invention relates to methods for removing antiplatelet agents and anticoagulants from a platelet preparation. In one embodiment, the method includes the step of flowing the platelet preparation through a filtering tube comprising a filtering membrane and separating the antiplatelet agents and anticoagulants from the platelet preparation by tangential flow filtration. In another embodiment, the method includes the step of passing the platelet preparation through porous material that specifically binds to the antiplatelet agents and anticoagulants.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: June 25, 2013
    Assignee: Biovec Transfusion, LLC
    Inventor: Lakshman R. Sehgal
  • Patent number: 8431334
    Abstract: The present invention relates to methods for preserving platelet. In one embodiment, the method includes the steps of mixing platelets with a platelet preservation composition to form a platelet preparation, storing the platelet preparation for a desired period of time, and removing the antiplatelet agent and the anticoagulant from the platelet preparation by diafiltration prior to transfusion of the platelets. The platelet preservation composition comprises an effective amount of an antiplatelet agent and an effective amount of an anticoagulant.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: April 30, 2013
    Assignee: Biovec Transfusion, LLC
    Inventor: Lakshman R. Sehgal
  • Patent number: 8420075
    Abstract: The present invention relates to methods and compositions for treatment of cardiovascular and peripheral vascular diseases using ex vivo and in vivo gene delivery technologies. One aspect of the present invention relates to a method for treating a vascular disease by introducing a DNA sequence encoding a TM protein or its variant into a segment of a blood vessel in vivo using a gutless adenovirus vector. Another aspect of the present invention is to provide a method to deliver a gutless adenovirus vector carrying a DNA sequence encoding a TM protein or its variant using a stent.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: April 16, 2013
    Assignee: Biovec, LLC
    Inventors: Lakshman R. Sehgal, Jonathan Wong
  • Publication number: 20130040282
    Abstract: A method for removing a photosensitizer from a platelet preservation composition is disclosed. The method comprises passing the platelet preservation composition through a tangential flow filtration device to separate the photosensitizer from the platelets in the platelet preservation composition.
    Type: Application
    Filed: September 25, 2012
    Publication date: February 14, 2013
    Applicant: BIOVEC TRANSFUSION, LLC
    Inventor: Lakshman R. Sehgal
  • Patent number: 8367056
    Abstract: A method for treating a renal disease in a subject is disclosed. The method includes administering into a kidney of the subject with an effective amount of a gutless adenoviral vector containing a polynucleotide encoding a therapeutic agent. The gutless adenoviral vector contains the nucleotide sequence of SEQ ID NO:13 or SEQ ID NO:15 and expresses the therapeutic agent in a kidney tissue of the subject.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: February 5, 2013
    Assignee: Biovec, LLC
    Inventors: Lakshman R. Sehgal, Jonathan Wong
  • Publication number: 20120315619
    Abstract: The present invention relates to methods for removing antiplatelet agents and anticoagulants from a platelet preparation. In one embodiment, the method includes the step of flowing the platelet preparation through a filtering tube comprising a filtering membrane and separating the antiplatelet agents and anticoagulants from the platelet preparation by tangential flow filtration. In another embodiment, the method includes the step of passing the platelet preparation through porous material that specifically binds to the antiplatelet agents and anticoagulants.
    Type: Application
    Filed: July 31, 2012
    Publication date: December 13, 2012
    Applicant: BIOVEC TRANSFUSION, LLC
    Inventor: Lakshman R. SEHGAL
  • Patent number: 8329389
    Abstract: The present invention relates to compositions and methods for storing platelets to preserve the function and freshness of the platelets. More particularly, the present invention relates to the use of a preservative composition having an antiplatelet agent, an anticoagulant, and an oxygen carrier, for maintaining the freshness of platelets. Additionally, the composition may also contain an ultra-short acting broad spectrum anti-microbial agents. The preservative composition may be used to store platelets in a liquid state, a frozen state, or a freeze-dried state.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: December 11, 2012
    Assignee: Biovec Transfusion, LLC
    Inventor: Lakshman R. Sehgal
  • Patent number: 8242095
    Abstract: A method for treating a renal disease in a subject is disclosed. The method includes administering into a kidney of the subject with an effective amount of a gutless adenoviral vector containing a polynucleotide encoding a therapeutic agent. The gutless adenoviral vector contains the nucleotide sequence of SEQ ID NO:13 or SEQ ID NO:15 and expresses the therapeutic agent in a kidney tissue of the subject.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: August 14, 2012
    Assignee: BIOVEC, LLC
    Inventors: Lakshman R. Sehgal, Jonathan Wong
  • Patent number: 8236300
    Abstract: A method for treating a renal disease in a subject is disclosed. The method includes administering into a kidney of the subject with an effective amount of a gutless adenoviral vector containing a polynucleotide encoding a therapeutic agent. The gutless adenoviral vector contains the nucleotide sequence of SEQ ID NO:13 or SEQ ID NO:15 and expresses the therapeutic agent in a kidney tissue of the subject.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: August 7, 2012
    Assignee: Biovec, LLC
    Inventors: Lakshman R. Sehgal, Jonathan Wong
  • Patent number: 8232044
    Abstract: The present invention relates to compositions and methods for storing platelets to preserve the function and freshness of the platelets. More particularly, the present invention relates to the use of a preservative composition having an antiplatelet agent, an anticoagulant, and an oxygen carrier, for maintaining the freshness of platelets. Additionally, the composition may also contain an ultra-short acting broad spectrum anti-microbial agents. The preservative composition may be used to store platelets in a liquid state, a frozen state, or a freeze-dried state.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: July 31, 2012
    Assignee: Biovec Transfusion, LLC
    Inventor: Lakshman R. Sehgal
  • Publication number: 20120157905
    Abstract: The present application relates to a system and method for treating carbon monoxide poisoning. The system and method comprises passing the blood of a subject in need of such treatment through a filter unit comprising a gas permeable membrane to remove carbon monoxide from the blood by filtration against an extraction fluid enriched with oxygen and/or by exposure to one or more agents suitable for removing carbon monoxide or converting carbon monoxide to carbon dioxide, which is more readily exchangeable with oxygen compared to carbon monoxide.
    Type: Application
    Filed: November 7, 2011
    Publication date: June 21, 2012
    Applicant: BIOVEC TRANSFUSION, LLC
    Inventor: Lakshman R. SEHGAL
  • Publication number: 20120134974
    Abstract: A method for preparing a blood component composition for reducing risk of transfusion related injury includes passing a blood component composition through a tangential flow filter unit comprising one or more filter membranes. A diafiltration solution is added to the blood component composition during the filtration process. Non-cellular plasma components, including antibodies, are removed from the blood component composition by the tangential flow filtration.
    Type: Application
    Filed: October 26, 2011
    Publication date: May 31, 2012
    Applicant: BIOVEC TRANSFUSION, LLC
    Inventor: Lakshman R. Sehgal