Patents by Inventor V. Prasad Shastri

V. Prasad Shastri 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: 20220411756
    Abstract: The present invention discloses an extracellular matrix comprising a modified polysaccharide consisting of repeating disaccharide units whereby in at least 11% of the disaccharide units one primary alcohol group is oxidized into a carboxylic acid.
    Type: Application
    Filed: June 8, 2022
    Publication date: December 29, 2022
    Applicant: Albert-Ludwigs-Universität Freiburg
    Inventors: V. Prasad Shastri, Aurélien Forget
  • Patent number: 11407978
    Abstract: The present invention discloses an extracellular matrix comprising a modified polysaccharide consisting of repeating disaccharide units whereby in at least 11% of the disaccharide units one primary alcohol group is oxidized into a carboxylic acid.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: August 9, 2022
    Assignee: Albert-Ludwigs-Universität Freiburg
    Inventors: V. Prasad Shastri, Aurelien Forget
  • Publication number: 20210355247
    Abstract: The present invention discloses a matrix comprising a modified polysaccharide consisting of repeating disaccharide units whereby in at least 11% of the disaccharide units one primary alcohol group is oxidized into a carboxylic acid group.
    Type: Application
    Filed: March 10, 2021
    Publication date: November 18, 2021
    Inventors: V. Prasad SHASTRI, Aurelien FORGET
  • Patent number: 10968285
    Abstract: The present invention discloses a matrix comprising a modified polysaccharide consisting of repeating disaccharide units whereby in at least 11% of the disaccharide units one primary alcohol group is oxidized into a carboxylic acid group.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: April 6, 2021
    Assignee: Albert-Ludwigs Universität Freiburg
    Inventors: V. Prasad Shastri, Aurelien Forget
  • Publication number: 20180355069
    Abstract: The present invention discloses a matrix comprising a modified polysaccharide consisting of repeating disaccharide units whereby in at least 11% of the disaccharide units one primary alcohol group is oxidized into a carboxylic acid group.
    Type: Application
    Filed: June 5, 2018
    Publication date: December 13, 2018
    Inventors: V. Prasad SHASTRI, Aurelien FORGET
  • Patent number: 9840593
    Abstract: Phase segregated block-copolymer based on repeating structural elements represented by formula I wherein PHA represents at least one block based on one or more ?-hydroxy acids, PDAS represents a central block based on a dialkylsiloxane, the PDAS block has a weight average molecular weight in the range of from 4000 to 10000, the blocks PHA have a weight average molecular weight in the range of from 2000 to 10 000, the phase segregated block copolymer has a weight average molecular weight of from 40 000 to 120 000.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: December 12, 2017
    Assignee: ALBERT-LUDWIGS-UNIVERSITÄT FREIBURG
    Inventors: V. Prasad Shastri, Maziar Matloubigharagozloo
  • Publication number: 20170261447
    Abstract: Injectable compositions for the MRI detection of an analyte selected from the group consisting of reactive oxygen species, proteases and enzymes, comprising a) a matrix material based on a responsive hydrophobic polymer capable of undergoing a chemical reaction with the analyte to be detected, such reaction leading to a disruption of the polymer chain of the responsive polymer, b) a contrast agent suitable for use in magnetic resonance imaging, embedded in or encapsulated in the polymer a), c) optionally, a functionality capable of binding a marker or probe or a probe for creating a second detection signal, and d) optionally, a non-responsive polymer not undergoing a chemical reaction with the analyte under the conditions where polymer a) undergoes a reaction leading to chain breakage
    Type: Application
    Filed: May 23, 2017
    Publication date: September 14, 2017
    Inventors: V. Prasad SHASTRI, Pradeep D. WYSS
  • Patent number: 9441051
    Abstract: The present invention discloses a matrix comprising a modified primary hydroxyl groups containing polysaccharide comprising repeating disaccharide units wherein in at least part of the disaccharide units the primary hydroxyl group is replaced by functional groups selected from halide groups or groups comprising sulfur or phosphorus atoms, like e.g. sulfate groups, sulfonate groups, phosphonate groups and phosphate groups.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: September 13, 2016
    Assignee: ALBERT LUDWIGS UNIVERSITÄFREIBURG
    Inventors: V. Prasad Shastri, Aurelien Forget, Florian Mieβmer
  • Publication number: 20160244570
    Abstract: Phase segregated block-copolymer based on repeating structural elements represented by formula I wherein PHA represents at least one block based on one or more ?-hydroxy acids, PDAS represents a central block based on a dialkylsiloxane, the PDAS block has a weight average molecular weight in the range of from 4000 to 10000, the blocks PHA have a weight average molecular weight in the range of from 2000 to 10 000, the phase segregated block copolymer has a weight average molecular weight of from 40 000 to 120 000.
    Type: Application
    Filed: April 21, 2016
    Publication date: August 25, 2016
    Inventors: V. Prasad SHASTRI, Maziar MATLOUBIGHARAGOZLOO
  • Publication number: 20140369939
    Abstract: Injectable compositions for the MRI detection of an analyte selected from the group consisting of reactive oxygen species, proteases and enzymes, comprising a) a matrix material based on a responsive hydrophobic polymer capable of undergoing a chemical reaction with the analyte to be detected, such reaction leading to a disruption of the polymer chain of the responsive polymer, b) a contrast agent suitable for use in magnetic resonance imaging, embedded in or encapsulated in the polymer a), c) optionally, a functionality capable of binding a marker or probe or a probe for creating a second detection signal, and d) optionally, a non-responsive polymer not undergoing a chemical reaction with the analyte under the conditions where polymer a) undergoes a reaction leading to chain breakage
    Type: Application
    Filed: June 10, 2014
    Publication date: December 18, 2014
    Inventors: V. PRASAD SHASTRI, Pradeep P. Wyss
  • Publication number: 20140314722
    Abstract: The present invention discloses a matrix comprising a modified polysaccharide consisting of repeating disaccharide units whereby in at least 11% of the disaccharide units one primary alcohol group is oxidized into a carboxylic acid group.
    Type: Application
    Filed: August 17, 2012
    Publication date: October 23, 2014
    Applicant: ALBERT-LUDWIGS UNIVERSITÄT FREIBURG
    Inventors: V. Prasad Shastri, Aurelien Forget
  • Publication number: 20140147407
    Abstract: The present invention discloses a matrix comprising a modified primary hydroxyl groups containing polysaccharide comprising repeating disaccharide units wherein in at least part of the disaccharide units the primary hydroxyl group is replaced by functional groups selected from halide groups or groups comprising sulfur or phosphorus atoms, like e.g. sulfate groups, sulfonate groups, phosphonate groups and phosphate groups.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 29, 2014
    Inventors: V. Prasad SHASTRI, Aurelien FORGET, Florian MIESSMER
  • Publication number: 20140038290
    Abstract: The present invention discloses an extracellular matrix comprising a modified polysaccharide consisting of repeating disaccharide units whereby in at least 11% of the disaccharide units one primary alcohol group is oxidized into a carboxylic acid.
    Type: Application
    Filed: August 18, 2011
    Publication date: February 6, 2014
    Inventors: V. Prasad Shastri, Aurélien Forget
  • Publication number: 20120076837
    Abstract: In one aspect, the invention relates to providing enhanced application tissue graft materials in regenerative medicine through improved cellular interactions. Biocompatible implant materials, methods for preparing biocompatible implant materials, methods for using same, and methods for treating tissue injury are disclosed. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: December 2, 2011
    Publication date: March 29, 2012
    Inventors: V. Prasad Shastri, Henrique Franca Diniz Oliveira
  • Publication number: 20120059456
    Abstract: In one aspect, the invention relates to coated substrates comprising a substrate having a surface, a cationic polymer layer adjacent the surface of the substrate, an anionic polymer layer adjacent the cationic polymer layer and methods for producing and using same. In one aspect, the cationic polymer layer comprises at least one residue of a first compound having the structure: In a further aspect, the anionic polymer layer comprises at least one residue of a compound having the structure: In a yet further aspect, at least one nanoparticle or microparticle is positioned within one or both of the anionic polymer layer and the cationic polymer layer. In a still further aspect, the outermost polymer layer has a surface having fractal characteristics. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: November 12, 2011
    Publication date: March 8, 2012
    Inventors: V. Prasad Shastri, Thomas Soike, Chenxia Guan
  • Publication number: 20120058100
    Abstract: Disclosed are co-electrospun polymeric fibers comprising polymers comprising pharmaceutically active agents and/or biologically active agents and capable of release at a combined release rate. Also disclosed are processes for preparing polymeric fibers capable of release at a combined release rate. Also disclosed are processes of modulating delivery rate of pharmaceutically active agents and/or biologically active agents. Also disclosed are processes of delivering pharmaceutically active agents and/or biologically active agents. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: November 11, 2011
    Publication date: March 8, 2012
    Inventors: V. Prasad Shastri, Jay C. Sy
  • Publication number: 20110196061
    Abstract: The present invention relates to novel initiator systems, methods of use, and cured composition for dental, orthopedic and drug delivery purpose. Specifically, it relates to a crosslinkable prepolymer where crosslinking is initiated by a two part system and a composition comprising an admixture of a resorbable bone substitute and a crosslinkable prepolymer. It also relates to the composition formed by crosslinking the admixture and a delivery system for cross-linking the polymer.
    Type: Application
    Filed: February 14, 2011
    Publication date: August 11, 2011
    Inventors: Arthur Ashman, V. Prasad Shastri
  • Publication number: 20110117008
    Abstract: The present invention provides compositions of avicins and avicin mixtures that enhance topical, percutaneous, transmucosal, transepithelial, transendothelial or transdermal transport of agents including diagnostic molecules, therapeutic drugs and cosmetic materials.
    Type: Application
    Filed: November 24, 2008
    Publication date: May 19, 2011
    Applicants: Research Development Foundation, Vanderbilt University
    Inventors: V. Prasad Shastri, Christopher Pino, Jordan Gutterman
  • Patent number: 7585515
    Abstract: The present invention relates to a novel composition for dental, orthopedic and drug delivery purpose. Specifically, it relates to composition comprising an admixture of a resorbable bone substitute and a crosslinkable prepolymer. It also relates to the composition formed by crosslinking the admixture.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: September 8, 2009
    Assignee: A Enterprises, Inc.
    Inventors: Arthur Ashman, V. Prasad Shastri
  • Publication number: 20090149569
    Abstract: In one aspect, the invention relates to providing enhanced application tissue graft materials in regenerative medicine through improved cellular interactions. Biocompatible implant materials, methods for preparing biocompatible implant materials, methods for using same, and methods for treating tissue injury are disclosed. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: July 21, 2008
    Publication date: June 11, 2009
    Inventors: V. Prasad Shastri, Henrique Franca Diniz Oliveira