Patents by Inventor Adnan Siddiqui

Adnan Siddiqui 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: 20240110102
    Abstract: Disclosed are ethylenically unsaturated salts of allyl (poly)ether sulfates utilized as reactive surfactants or emulsifiers during emulsion polymerization.
    Type: Application
    Filed: December 13, 2023
    Publication date: April 4, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: Lichang Zhou, Adnan Siddiqui, Dongcheel Lee, Derek Pakenham, Eugene J. Anderson, Shailesh Majmudar, Eunyong Kim, Homayoun Jamasbi, An Tran, Peng Zhang
  • Patent number: 11884867
    Abstract: Disclosed are ethylenically unsaturated salts of allyl (poly)ether sulfates utilized as reactive surfactants or emulsifiers during emulsion polymerization.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: January 30, 2024
    Assignee: RHODIA OPERATIONS
    Inventors: Lichang Zhou, Adnan Siddiqui, Dongcheel Lee, Derek Pakenham, Eugene J. Anderson, Shailesh Majmudar, Eunyong Kim, Homayoun Jamasbi, An Tran, Peng Zhang
  • Publication number: 20230000510
    Abstract: A system for removing an occlusive clot from a blood vessel comprises a catheter and an apparatus for generating a pulsatile vacuum force to pulse the pressure gradient at a distal end of the catheter. The pulse generator may be integral with or separate from the vacuum pump. The pulse generator may be applied to a flexible tubing between the vacuum pump and the proximal end of the catheter.
    Type: Application
    Filed: September 8, 2022
    Publication date: January 5, 2023
    Applicant: Neuravi Limited
    Inventors: Eamon BRADY, David VALE, Michael GILVARRY, Brendan CASEY, Marto HOARY, Adnan SIDDIQUI
  • Patent number: 11464528
    Abstract: A system for removing occlusive clot from a blood vessel comprises a catheter and an apparatus for generating a pulsatile vacuum force to pulse the pressure gradient at a distal end of the catheter. The pulse generator may be integral with or separate from the vacuum pump. The pulse generator may be applied to a flexible tubing between the vacuum pump and the proximal end of the catheter.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: October 11, 2022
    Assignee: NEURAVI LIMITED
    Inventors: Eamon Brady, David Vale, Michael Gilvarry, Brendan Casey, Marto Hoary, Adnan Siddiqui
  • Publication number: 20220235272
    Abstract: Disclosed are ethylenically unsaturated salts of allyl (poly)ether sulfates utilized as reactive surfactants or emulsifiers during emulsion polymerization.
    Type: Application
    Filed: May 1, 2020
    Publication date: July 28, 2022
    Inventors: Lichang ZHOU, Adnan SIDDIQUI, Dongcheel LEE, Derek PAKENHAM, Eugene J. ANDERSON, Shailesh MAJMUDAR, Eunyong KIM, Homayoun JAMASBI, An TRAN, Peng ZHANG
  • Publication number: 20190239910
    Abstract: A system for removing occlusive clot from a blood vessel comprises a catheter and an apparatus for generating a pulsatile vacuum force to pulse the pressure gradient at a distal end of the catheter. The pulse generator may be integral with or separate from the vacuum pump. The pulse generator may be applied to a flexible tubing between the vacuum pump and the proximal end of the catheter.
    Type: Application
    Filed: July 25, 2017
    Publication date: August 8, 2019
    Applicant: NEURAVI LIMITED
    Inventors: Eamon BRADY, David VALE, Michael GILVARRY, Brendan CASEY, Marto HOARY, Adnan SIDDIQUI
  • Publication number: 20180072909
    Abstract: Coatings and other applications containing latex having self-thickening properties obtainable by methods of adding a water soluble amphiphilic copolymer in a aqueous dispersion of a water-insoluble polymer obtained from ethylenically unsaturated monomers.
    Type: Application
    Filed: September 8, 2017
    Publication date: March 15, 2018
    Applicant: RHODIA OPERATIONS
    Inventors: Lichang ZHOU, Adnan SIDDIQUI, Homayoun JAMASBI, David James WILSON, Pierre-Emmanuel DUFILS, Tiffany CHEN, Fabio TREZZI
  • Publication number: 20170362425
    Abstract: Coatings and other applications containing a latex with modified surface properties obtainable by methods of adding a water soluble amphiphilic copolymer in a aqueous dispersion of a water-insoluble polymer obtained from ethylenically unsaturated monomers.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 21, 2017
    Applicant: RHODIA OPERATIONS
    Inventors: Adnan SIDDIQUI, Pierre-Emmanuel DUFILS, David James WILSON, Tiffany CHEN
  • Patent number: 7026418
    Abstract: Disclosed is an improved method of making polymers. The method utilizes at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditional monomers and/or polymerization with itself (i.e. homopolymerization) and is preferably substantially completely consumed during the course of the polymerization. Polymers produced by the method of the present invention are well suited for use in coatings, adhesives, sealants, elastomers and the like, as they form stable films, possess excellent adhesion properties and have improved hydrolytic stability characteristics. The present invention also encompasses homopolymeric surface active agents and their use in polymerization reactions.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: April 11, 2006
    Assignee: Stepan Company
    Inventors: Alfred K. Schulz, Adnan Siddiqui
  • Patent number: 6900265
    Abstract: An improved method of making CASE materials is provided, wherein the method utilizes a polymer latex derived from at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditional monomers and is preferably substantially completely consumed during the course of the polymerization. Latex polymers produced by the method of the present invention are well suited for use in coatings, adhesives, sealants, elastomers. Additionally, the present invention relates to improved coating, adhesive, sealant and elastomer (CASE) materials utilizing polymer latexes derived from various monomers and ethylenically unsaturated amine salts of sulfonic, phosphoric and/or carboxylic acids.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: May 31, 2005
    Assignee: Stepan Company
    Inventors: Alfred K. Schultz, Adnan Siddiqui, Elaine R. Kleinfeld
  • Publication number: 20050010009
    Abstract: Disclosed is an improved method of making polymers. The method utilizes at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditional monomers and/or polymerization with itself (i.e. homopolymerization) and is preferably substantially completely consumed during the course of the polymerization. Polymers produced by the method of the present invention are well suited for use in coatings, adhesives, sealants, elastomers and the like, as they form stable films, possess excellent adhesion properties and have improved hydrolytic stability characteristics. The present invention also encompasses homopolymeric surface active agents and their use in polymerization reactions.
    Type: Application
    Filed: July 28, 2004
    Publication date: January 13, 2005
    Inventors: Alfred K. Schultz, Adnan Siddiqui
  • Publication number: 20040092632
    Abstract: An improved method of making CASE materials is provided, wherein the method utilizes a polymer latex derived from at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditional monomers and is preferably substantially completely consumed during the course of the polymerization. Latex polymers produced by the method of the present invention are well suited for use in coatings, adhesives, sealants, elastomers. Additionally, the present invention relates to improved coating, adhesive, sealant and elastomer (CASE) materials utilizing polymer latexes derived from various monomers and ethylenically unsaturated amine salts of sulfonic, phosphoric and/or carboxylic acids.
    Type: Application
    Filed: April 10, 2002
    Publication date: May 13, 2004
    Applicant: Stepan Company
    Inventors: Alfred K. Schultz, Adnan Siddiqui, Elaine R. Kleinfeld
  • Patent number: 6492445
    Abstract: Antibacterial CASE materials comprising a latex comprising polymer particles and a surfactant component. Also disclosed are components and methods for forming such materials.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: December 10, 2002
    Assignee: Stepan Company
    Inventors: Adnan Siddiqui, Alfred K. Schultz
  • Publication number: 20020161108
    Abstract: Disclosed is an improved method of making polymers. The method utilizes at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditional monomers and/or polymerization with itself (i.e. homopolymerization) and is preferably substantially completely consumed during the course of the polymerization. Polymers produced by the method of the present invention are well suited for use in coatings, adhesives, sealants, elastomers and the like, as they form stable films, possess excellent adhesion properties and have improved hydrolytic stability characteristics. The present invention also encompasses homopolymeric surface active agents and their use in polymerization reactions.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 31, 2002
    Applicant: STEPAN COMPANY, A corporation of the State of Delaware
    Inventors: Alfred K. Schultz, Adnan Siddiqui
  • Patent number: 6407162
    Abstract: Disclosed is an improved method of making polymers. The method utilizes at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditional monomers and/or polymerization with itself (i.e. homopolymerization) and is preferably substantially completely consumed during the course of the polymerization. Polymers produced by the method of the present invention are well suited for use in coatings, adhesives, sealants, elastomers and the like, as they form stable films, possess excellent adhesion properties and have improved hydrolytic stability characteristics. The present invention also encompasses homopolymeric surface active agents and their use in polymerization reactions.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: June 18, 2002
    Assignee: Stepan Company
    Inventors: Alfred K. Schultz, Adnan Siddiqui
  • Publication number: 20020040092
    Abstract: Disclosed are antibacterial CASE materials comprising a latex comprising polymer particles and a surfactant component. Also disclosed are components and methods for forming such materials.
    Type: Application
    Filed: June 5, 2001
    Publication date: April 4, 2002
    Applicant: Stepan Company
    Inventors: Adnan Siddiqui, Alfred Schultz
  • Patent number: 6242526
    Abstract: Antimicrobial coating, adhesive, sealant and elastomeric materials comprising a latex containing polymer particles and a primary surfactant component where the particles are formed by the reaction of an ethylenically unsaturated monomer and a polymerizable antibacterial quaternary ammonium compound. The primary surfactant is an anionic surfactant or nonionic surfactant, and the polymer particles comprise at least one monomer unit and at least one surface active agent unit. The monomer unit is derived from an ethylenically unsaturated monomer and the surface active agent unit is derived from a polymerizable antibacterial quaternary ammonium compound.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: June 5, 2001
    Assignee: Stepan Company
    Inventors: Adnan Siddiqui, Alfred K. Schultz
  • Patent number: 6239240
    Abstract: Disclosed is an improved method of making polymers. The method utilizes at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditional monomers and/or polymerization with itself (i.e. homopolymerization) and is preferably substantially completely consumed during the course of the polymerization. Polymers produced by the method of the present invention are well suited for use in coatings, adhesives, sealants, elastomers and the like, as they form stable films, possess excellent adhesion properties and have improved hydrolytic stability characteristics. The present invention also encompasses homopolymeric surface active agents and their use in polymerization reactions.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: May 29, 2001
    Assignee: Stepan Company
    Inventors: Alfred K. Schultz, Adnan Siddiqui