Patents by Inventor Bhalchandra M. Karandikar

Bhalchandra M. Karandikar 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: 20190282585
    Abstract: The present disclosure comprises antimicrobial compositions and devices comprising silver compounds that resist heat and light discoloration. In one aspect, the said compounds comprise silver and at least one s-triazine ring or moiety. In another aspect, the antimicrobial compositions are hydrogels that are effective against broad spectrum of common pathogens including MRSA and VRE and are suitable for treating human or animal wounds and burns. The methods of the present disclosure comprise treating medical and non-medical devices and articles with compositions comprising the silver compounds to impart antimicrobial property.
    Type: Application
    Filed: June 4, 2019
    Publication date: September 19, 2019
    Inventor: Bhalchandra M. Karandikar
  • Patent number: 10350219
    Abstract: The present disclosure comprises antimicrobial compositions and devices comprising silver compounds that resist heat and light discoloration. In one aspect, the said compounds comprise silver and at least one s-triazine ring or moiety. In another aspect, the antimicrobial compositions are hydrogels that are effective against broad spectrum of common pathogens including MRSA and VRE and are suitable for treating human or animal wounds and burns. The methods of the present disclosure comprise treating medical and non-medical devices and articles with compositions comprising the silver compounds to impart antimicrobial property.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: July 16, 2019
    Assignee: MEDICAL TECHNOLOGY RESEARCH INC
    Inventor: Bhalchandra M. Karandikar
  • Patent number: 10251392
    Abstract: The present invention comprises methods and compositions for antimicrobial devices comprising metal containing compositions which are resistant to heat and light discoloration. The metal containing compositions may comprise salts or complexes of silver, copper or zinc. In one aspect the compositions comprise silver salts. In another aspect, the compositions comprise silver complexes. In one aspect, the metal salts may comprise metal salts of saccharin, acesulfame, long chain fatty acids, and alkyl dicarboxylic acids. The compositions further comprise polymers which form salts or complexes with silver, copper or zinc. The methods of the present invention comprise treating devices with the metal containing compositions, including, but not limited to, such devices as woven wound care materials, catheters, patient care devices, and collagen matrices. The present invention further comprises treatment of humans and animals with the antimicrobial devices described herein.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: April 9, 2019
    Assignee: Avent, Inc.
    Inventors: Bhalchandra M. Karandikar, Bruce L. Gibbins, Ken A. Cornell
  • Patent number: 10189798
    Abstract: The present disclosure pertains to antimicrobial compounds that include silver (Ag) and an s-triazine ring with substitutions at nitrogen or carbon atoms of the s-triazine ring. In one example, the antimicrobial silver s-triazine may be readily incorporated in a variety of compositions and devices in both medical and non-medical settings. In another example, the said compounds may possess broad spectrum antimicrobial activity against bacteria, viruses, fungi and other microbes.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: January 29, 2019
    Assignee: MEDICAL TECHNOLOGY RESEARCH INC
    Inventor: Bhalchandra M. Karandikar
  • Publication number: 20180134672
    Abstract: The present disclosure pertains to antimicrobial compounds that include silver (Ag) and an s-triazine ring with substitutions at nitrogen or carbon atoms of the s-triazine ring. In one example, the antimicrobial silver s-triazine may be readily incorporated in a variety of compositions and devices in both medical and non-medical settings. In another example, the said compounds may possess broad spectrum antimicrobial activity against bacteria, viruses, fungi and other microbes.
    Type: Application
    Filed: September 30, 2015
    Publication date: May 17, 2018
    Inventor: Bhalchandra M. Karandikar
  • Patent number: 9888691
    Abstract: The present invention comprises methods and compositions for antimicrobial silver compositions comprising silver nanoparticles. The present invention further comprises compositions for preparing silver nanoparticles comprising at least one stabilizing agent, one or more silver compounds, at least one reducing agent and a solvent. In one aspect, the stabilizing agent comprises a surfactant or a polymer. The polymer may comprise polymers such as polyacrylamides, polyurethanes, and polyamides. In one aspect, the silver compound comprises a salt comprising a silver cation and an anion. The anion may comprise saccharinate derivatives, long chain fatty acids, and alkyl dicarboxylates. The methods of the present invention comprise treating devices with the silver nanoparticle compositions, including, but not limited to, such devices as woven wound care materials, catheters, patient care devices, and collagen matrices.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: February 13, 2018
    Assignee: Avent, Inc.
    Inventors: Bhalchandra M. Karandikar, Bruce L. Gibbins, Kenneth A. Cornell
  • Publication number: 20170296554
    Abstract: The present disclosure comprises antimicrobial compositions and devices comprising silver compounds that resist heat and light discoloration. In one aspect, the said compounds comprise silver and at least one s-triazine ring or moiety. In another aspect, the antimicrobial compositions are hydrogels that are effective against broad spectrum of common pathogens including MRSA and VRE and are suitable for treating human or animal wounds and burns. The methods of the present disclosure comprise treating medical and non-medical devices and articles with compositions comprising the silver compounds to impart antimicrobial property.
    Type: Application
    Filed: July 3, 2017
    Publication date: October 19, 2017
    Inventor: Bhalchandra M. Karandikar
  • Patent number: 9757387
    Abstract: The present disclosure comprises antimicrobial compositions and devices comprising silver compounds that resist heat and light discoloration. In one aspect, the said compounds comprise silver and at least one s-triazine ring or moiety. In another aspect, the antimicrobial compositions are hydrogels that are effective against broad spectrum of common pathogens including MRSA and VRE and are suitable for treating human or animal wounds and burns. The methods of the present disclosure comprise treating medical and non-medical devices and articles with compositions comprising the silver compounds to impart antimicrobial property.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: September 12, 2017
    Assignee: Medical Technology Research Inc
    Inventor: Bhalchandra M. Karandikar
  • Publication number: 20170027839
    Abstract: There is provided a method of producing a stabilized catalase enzyme. In the method, a substrate is thoroughly mixed with phosphate borate and catalase, rinsed with water and the solids dried. The dried solid may be mixed with polyvinyl alcohol and dried for further stabilization. The stabilized powder may be mixed with various skin solutions (lotions, ointments and the like). The catalase enzyme can catalyze the reaction of peroxide to oxygen.
    Type: Application
    Filed: October 10, 2016
    Publication date: February 2, 2017
    Inventors: Bhalchandra M. Karandikar, Sunita J. Macwana, Zhongju Liu Zhao
  • Publication number: 20170022483
    Abstract: There is provided a method of producing a stabilized microcrystalline cellulose powder containing catalase enzyme. In the method, cellulose is thoroughly mixed with phosphate borate and catalase, rinsed with water and a surfactant added. The stabilized powder may be mixed with various skin solutions (lotions, ointments and the like). The catalase enzyme can catalyze the reaction of peroxide to oxygen.
    Type: Application
    Filed: October 4, 2016
    Publication date: January 26, 2017
    Inventors: Bhalchandra M. Karandikar, Sunita J. Macwana, Zhongju Liu Zhao
  • Patent number: 9487759
    Abstract: There is provided a method of producing a stabilized catalase enzyme. In the method, a substrate is thoroughly mixed with phosphate borate and catalase, rinsed with water and the solids dried. The dried solid may be mixed with polyvinyl alcohol and dried for further stabilization. The stabilized powder may be mixed with various skin solutions (lotions, ointments and the like). The catalase enzyme can catalyze the reaction of peroxide to oxygen.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: November 8, 2016
    Assignee: Avent, Inc.
    Inventors: Bhalchandra M. Karandikar, Sunita J. Macwana, Zhongju Liu Zhao
  • Patent number: 9481879
    Abstract: There is provided a method of producing a stabilized microcrystalline cellulose powder containing catalase enzyme. In the method, cellulose is thoroughly mixed with phosphate borate and catalase, rinsed with water and a surfactant added. The stabilized powder may be mixed with various skin solutions (lotions, ointments and the like). The catalase enzyme can catalyze the reaction of peroxide to oxygen.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: November 1, 2016
    Assignee: Avent, Inc.
    Inventors: Bhalchandra M. Karandikar, Sunita J. Macwana, Zhongju Liu Zhao
  • Patent number: 9381269
    Abstract: A biosorbable oxygen-delivery wound treatment device that includes a biosorbable matrix for delivering oxygen. The biosorbable matrix includes a water swellable, cross-linked biosorbable polymer network. A plurality of gas-permeable, elastic, closed cells is defined by the cross-linked biosorbable polymer network. According to the invention, these closed cells may be produced from a reaction between a catalyst and a second reactant. Deliverable oxygen is contained within the elastic closed cells such that when the device is used to treat a wound, oxygen is delivered from the closed cells. A process for making a biosorbable oxygen-delivery wound treatment device that includes a biosorbable matrix for delivering oxygen as well as a method of using an oxygen-delivery wound treatment device is disclosed.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: July 5, 2016
    Assignee: Avent, Inc.
    Inventors: Bhalchandra M. Karandikar, Sophie Truc Lam
  • Patent number: 9289378
    Abstract: The present invention comprises compositions and methods for providing antimicrobial compositions. The antimicrobial compositions comprise gel delivery vehicles comprising stabilized silver, wherein ionic silver is provided to a site for antimicrobial purposes. Methods of making and using such compositions are taught, including application of the silver-containing gel compositions to wounds, burns, abrasions, cuts, surgical incision, sites where skin or organ integrity has been breached, and other sites to supply an antimicrobial environment.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: March 22, 2016
    Assignee: Avent, Inc.
    Inventors: Bhalchandra M. Karandikar, Bruce L. Gibbins
  • Publication number: 20160038413
    Abstract: The present invention comprises compositions and methods for providing antimicrobial compositions. The antimicrobial compositions comprise gel delivery vehicles comprising stabilized silver, wherein ionic silver is provided to a site for antimicrobial purposes. Methods of making and using such compositions are taught, including application of the silver-containing gel compositions to wounds, burns, abrasions, cuts, surgical incision, sites where skin or organ integrity has been breached, and other sites to supply an antimicrobial environment.
    Type: Application
    Filed: September 1, 2015
    Publication date: February 11, 2016
    Inventors: Bhalchandra M. Karandikar, Bruce L. Gibbins
  • Patent number: 9193820
    Abstract: An antimicrobial polyurethane foam that is formed from: a multi-functional isocyanate component; an aqueous polyol component reactive with the multi-functional isocyanate component; an antimicrobial metallic compound; and a complexing agent. The complexing agent is used to form a stable blend of the antimicrobial metallic compound with the polyol component. Exemplary complexing agents include amine compounds, ammonium-containing compounds, and ammonia as well as combinations of these compounds. The antimicrobial metallic compound can be a silver, zinc, or copper compound. Desirably, the antimicrobial metallic compound is silver saccharinate. A process of making the antimicrobial polyurethane foam and stable blends used in the manufacture of the antimicrobial polyurethane foam are also disclosed.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: November 24, 2015
    Assignee: Avent, Inc.
    Inventors: Bhalchandra M. Karandikar, Bruce L. Gibbins
  • Patent number: 9181093
    Abstract: There is provided a two part spray for the liberation and delivery of oxygen through the use of a first part that is a peroxide-containing solution and a second part that is a nanoparticle manganese dioxide catalyst. When the two parts are mixed together, the ensuing reaction results in the liberation of oxygen.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: November 10, 2015
    Assignee: Avent, Inc.
    Inventors: Bhalchandra M. Karandikar, Sunita J. Macwana, Zhongju Liu Zhao
  • Publication number: 20150313912
    Abstract: The present disclosure comprises antimicrobial compositions and devices comprising silver compounds that resist heat and light discoloration. In one aspect, the said compounds comprise silver and at least one s-triazine ring or moiety. In another aspect, the antimicrobial compositions are hydrogels that are effective against broad spectrum of common pathogens including MRSA and VRE and are suitable for treating human or animal wounds and burns. The methods of the present disclosure comprise treating medical and non-medical devices and articles with compositions comprising the silver compounds to impart antimicrobial property.
    Type: Application
    Filed: April 29, 2014
    Publication date: November 5, 2015
    Applicant: MEDICAL TECHNOLOGY RESEARCH INC
    Inventor: Bhalchandra M. KARANDIKAR
  • Publication number: 20150087739
    Abstract: An antimicrobial polyurethane foam that is formed from: a multi-functional isocyanate component; an aqueous polyol component reactive with the multi-functional isocyanate component; an antimicrobial metallic compound; and a complexing agent. The complexing agent is used to form a stable blend of the antimicrobial metallic compound with the polyol component. Exemplary complexing agents include amine compounds, ammonium-containing compounds and ammonia as well as combinations these compounds. The antimicrobial metallic compound can be a silver, zinc or copper compound. Desirably, the antimicrobial metallic compound is silver saccharinate. A process of making the antimicrobial polyurethane foam and stable blends used in the manufacture of the antimicrobial polyurethane foam are also disclosed.
    Type: Application
    Filed: December 1, 2014
    Publication date: March 26, 2015
    Inventors: Bhalchandra M. Karandikar, Bruce L. Gibbins
  • Publication number: 20150072066
    Abstract: The present invention comprises methods and compositions for antimicrobial silver compositions comprising silver nanoparticles. The present invention further comprises compositions for preparing silver nanoparticles comprising at least one stabilizing agent, one or more silver compounds, at least one reducing agent and a solvent. In one aspect, the stabilizing agent comprises a surfactant or a polymer. The polymer may comprise polymers such as polyacrylamides, polyurethanes, and polyamides. In one aspect, the silver compound comprises a salt comprising a silver cation and an anion. The anion may comprise saccharinate derivatives, long chain fatty acids, and alkyl dicarboxylates. The methods of the present invention comprise treating devices with the silver nanoparticle compositions, including, but not limited to, such devices as woven wound care materials, catheters, patient care devices, and collagen matrices.
    Type: Application
    Filed: November 18, 2014
    Publication date: March 12, 2015
    Inventors: Bhalchandra M. Karandikar, Bruce L. Gibbins, Kenneth A. Cornell