Patents by Inventor Mehdi Durali

Mehdi Durali 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: 20200324018
    Abstract: Various embodiments relate to compositions for use in endoluminal devices and to methods of using compositions in endoluminal devices. The compositions include two parts, a first part including a first solution and a second part including a second solution, wherein the first solution comprises one or more pre-polymers, a non-aqueous solvent, a polymerization co-initiator or initiator and optionally one or more chain extenders and additives, and the second solution comprises a polymerization initiator or co-initiator, a non-aqueous solvent and optionally one or more chain extenders and additives.
    Type: Application
    Filed: October 19, 2018
    Publication date: October 15, 2020
    Inventors: Mehdi Durali, Lonnie Jones
  • Publication number: 20190336655
    Abstract: The present invention provides a dry powder that is suitable for use in forming a hydrogel and characterized by a stable composition at ambient conditions. The dry powder includes a prepolymer including a straight chain polyethylene glycol, and a thermally activated free radical initiator selected from the group consisting of sodium persulfate, potassium persulfate, and ammonium persulfate. The present invention also provides a method of forming the dry powder, and a method of preparing a hydrogel where a reaction mixture is formed including the dry powder and a buffered aqueous solution.
    Type: Application
    Filed: July 11, 2019
    Publication date: November 7, 2019
    Inventors: Donovan Prewett, Paolo Mendoza, Charles Bankert, Mehdi Durali
  • Patent number: 10350331
    Abstract: The present invention provides a dry powder that is suitable for use in forming a hydrogel and characterized by a stable composition at ambient conditions. The dry powder includes a prepolymer including a straight chain polyethylene glycol, and a thermally activated free radical initiator selected from the group consisting of sodium persulfate, potassium persulfate, and ammonium persulfate. The present invention also provides a method of forming the dry powder, and a method of preparing a hydrogel where a reaction mixture is formed including the dry powder and a buffered aqueous solution.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: July 16, 2019
    Assignee: Endologix, Inc.
    Inventors: Donovan Prewett, Paolo Mendoza, Charles Bankert, Mehdi Durali
  • Patent number: 10259899
    Abstract: This invention relates to copolymer compositions of poly(vinylidene fluoride-2,3,3,3-tetrafluoropropene) copolymers. The copolymers formed have excellent optical properties, corrosion resistance and electrical properties, with very low haze. Tetrafluoropropene monomer units may be present at from 0.5 to 60 weight percent of the copolymer.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: April 16, 2019
    Assignee: ARKEMA INC.
    Inventors: Mehdi Durali, David A. Mountz
  • Publication number: 20190008631
    Abstract: A system includes a graft body and a filling structure. The graft body has a fenestration in a side surface through which a support structure is insertable. The filling structure has an internal volume that is tillable with a filling medium and is configured to have a conduit through the internal volume through which the support structure is insertable. The conduit in the filling structure is alignable with the fenestration in the graft body such that the support structure is insertable through both the conduit in the filling structure and the fenestration in the graft body.
    Type: Application
    Filed: December 23, 2016
    Publication date: January 10, 2019
    Inventors: Aric Stone, James Machek, Craig Welk, Mehdi Durali, Peter Nalbach, Avyaya Sharma, Carlos Ortega, Girma Kebede, Ryan Goff, John Weaver, Swanand Sardesai, Sanaz Sotodeh, Jason Rinehart
  • Publication number: 20180201775
    Abstract: Fluoropolymer-based coatings with enhanced gloss are obtained by using a semi-crystalline fluorinated polymer having a very small particle size, in combination with a nucleating agent (such as PTFE) and, optionally, an acrylic polymer.
    Type: Application
    Filed: June 29, 2016
    Publication date: July 19, 2018
    Inventors: Min ZHENG, Kurt A. WOOD, Jeffrey H. YEN, Mehdi DURALI, Scott R. GABOURY
  • Patent number: 9925026
    Abstract: An adapter for coupling a compule with a dental handpiece including a piston. The compule contains a dental material. The adapter includes a coupling portion that defines openings for attaching the adapter to the compule and for attaching the adapter to the dental handpiece. A plunger portion extends through one opening and engages the piston. A breakable tab connects the coupling portion and the plunger portion and breaks during dispensing of the material. The plunger portion is then movable relative to the coupling portion. A tip for use with the dental handpiece includes a housing that defines a chamber. A needle extends from the housing and defines a lumen having an opening from which the dental material is dispensed. A plunger slides within the chamber to push the dental material through the lumen and includes a rib that seals the plunger against the chamber during sliding movement of the plunger.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: March 27, 2018
    Assignee: Kerr Corporation
    Inventors: Emanuele Maretto, Matteo Bosisio, Gopikrishnan Soundararajan, Mehdi Durali, Carlos Munoz
  • Publication number: 20160367731
    Abstract: The present invention provides a dry powder that is suitable for use in forming a hydrogel and characterized by a stable composition at ambient conditions. The dry powder includes a prepolymer including a straight chain polyethylene glycol, and a thermally activated free radical initiator selected from the group consisting of sodium persulfate, potassium persulfate, and ammonium persulfate. The present invention also provides a method of forming the dry powder, and a method of preparing a hydrogel where a reaction mixture is formed including the dry powder and a buffered aqueous solution.
    Type: Application
    Filed: September 2, 2016
    Publication date: December 22, 2016
    Applicant: ENDOLOGIX, INC.
    Inventors: Donovan Prewett, Paolo Mendoza, Charles Bankert, Mehdi Durali
  • Patent number: 9493595
    Abstract: The invention relates to a copolymer composition of poly(vinylidene fluoride-trifluoropropene) copolymers. The copolymers formed have excellent optical properties, with very low haze, as well as high melting points, excellent flexibility and toughness.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: November 15, 2016
    Assignee: Arkema Inc.
    Inventors: Mehdi Durali, David A. Mountz
  • Patent number: 9447256
    Abstract: The invention relates to methods of polymerizing fluoromonomers using non-fluorinated surfactants, in particular to emulsion polymerization method for producing fluoropolymer latex. Specifically, the method of polymerization uses one or more alkyl sulfate surfactants.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: September 20, 2016
    Assignee: Arkema Inc.
    Inventors: Ramin Amin-Sanayei, Lotfi Hedhli, Mehdi Durali, Roice A. Wille
  • Patent number: 9434837
    Abstract: A fluoropolymer latex is obtained by emulsion polymerization of one or more fluoromonomers in the presence of one or more acid-functionalized monomers such as vinyl sulfonic acid or a salt thereof. A fluorosurfactant need not be present.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: September 6, 2016
    Assignee: Arkema Inc.
    Inventors: Mehdi Durali, Lotfi Hedhli
  • Publication number: 20160015495
    Abstract: An adapter for coupling a compule with a dental handpiece including a piston. The compule contains a dental material. The adapter includes a coupling portion that defines openings for attaching the adapter to the compule and for attaching the adapter to the dental handpiece. A plunger portion extends through one opening and engages the piston. A breakable tab connects the coupling portion and the plunger portion and breaks during dispensing of the material. The plunger portion is then movable relative to the coupling portion. A tip for use with the dental handpiece includes a housing that defines a chamber. A needle extends from the housing and defines a lumen having an opening from which the dental material is dispensed. A plunger slides within the chamber to push the dental material through the lumen and includes a rib that seals the plunger against the chamber during sliding movement of the plunger.
    Type: Application
    Filed: July 16, 2015
    Publication date: January 21, 2016
    Inventors: Emanuele Maretto, Matteo Bosisio, Gopikrishnan Soundararajan, Mehdi Durali, Carlos Munoz
  • Patent number: 8765890
    Abstract: A novel aqueous polymerization process for making fluoropolymer dispersions is disclosed in which non-ionic non-fluorinated emulsifier is used to produce fluoropolymer emulsions. The emulsifiers contain blocks of polyethylene glycol, polypropylene glycol and/or polytetramethylene glycol. The process and fluoropolymer produced contain no fluorinated surfactant. The fluoropolymers have excellent resistance to discoloration.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: July 1, 2014
    Assignee: Arkema Inc.
    Inventors: Ramin Amin-Sanayei, Mehdi Durali, Patrick Kappler, Greylan Burch
  • Publication number: 20140179868
    Abstract: The invention relates to methods of polymerizing fluoromonomers using non-fluorinated surfactants, in particular to emulsion polymerization method for producing fluoropolymer latex. Specifically, the method of polymerization uses one or more alkyl sulfate surfactants.
    Type: Application
    Filed: July 25, 2012
    Publication date: June 26, 2014
    Inventors: Ramin Amin-Sanayei, Lotfi Hedhli, mehdi Durali, Roice A. Wille
  • Patent number: 8697822
    Abstract: The present invention relates to a method for the polymerization in an aqueous medium of monomers, and especially of fluoromonomers, using non-fluorinated surfactants; and the fluoropolymers formed therefrom. Specifically, the method of the polymerization uses one or more non-fluorinated surfactants selected from the group consisting of polyvinylphosphonic acid, polyacrylic acids, polyvinyl sulfonic acid, and salts thereof. Additionally, the use of polyvinylphosphonic acid, polyacrylic acids, polyvinyl sulfonic acid as surfactants in aqueous free radical polymerization is also novel.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: April 15, 2014
    Assignee: Arkema Inc.
    Inventors: Mehdi Durali, Lotfi Hedhli, Ramin Amin-Sanayei
  • Publication number: 20140050043
    Abstract: A universal dental impression material system uses a programmable device having containers for separately housing two or more components that form a dental impression material when mixed. A mixing chamber and a dispensing means respectively receive/mix the components and dispense the dental impression material. One or more viscosity modification zones are configured to apply viscosity manipulation to a component prior to mixing, to the components in the mixing chamber during mixing, and/or to the dental impression material in the dispensing means after mixing. A user interface accepts user input of desired properties, such as viscosity, color, work/set time and/or extrusion rate. A controller operatively coupled to the user interface is configured to control dispensing of the components to the mixing chamber, activation as needed of the viscosity modification zones, and dispensing from the dispensing means in response to the user input to achieve the desired properties.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 20, 2014
    Applicant: KERR CORPORATION
    Inventors: Mehdi Durali, Vahik Krikorian
  • Publication number: 20130150519
    Abstract: A fluoropolymer latex is obtained by emulsion polymerization of one or more fluoromonomers in the presence of one or more acid-functionalized monomers such as vinyl sulfonic acid or a salt thereof. A fluorosurfactant need not be present.
    Type: Application
    Filed: August 30, 2011
    Publication date: June 13, 2013
    Applicant: Arkema Inc.
    Inventors: Mehdi Durali, Lotfi Hedhli
  • Publication number: 20120142858
    Abstract: A novel aqueous polymerization process for making fluoropolymer dispersions is disclosed in which non-ionic non-fluorinated emulsifier is used to produce fluoropolymer emulsions. The emulsifiers contain blocks of polyethylene glycol, polypropylene glycol and/or polytetramethylene glycol. The process and fluoropolymer produced contain no fluorinated surfactant. The fluoropolymers have excellent resistance to discoloration.
    Type: Application
    Filed: November 16, 2011
    Publication date: June 7, 2012
    Applicant: Arkema Inc.
    Inventors: Ramin Amin-Sanayei, Mehdi Durali, Patrick Kappler, Greylan Burch
  • Patent number: 8124699
    Abstract: The present invention relates to a method for the polymerization of fluoromonomers using non-fluorinated alkyl phosphonate surfactants, and to the fluoropolymers formed thereby. Specifically, the method of the polymerization uses one or more alkyl phosphonic acids or salts thereof.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: February 28, 2012
    Assignee: Arkema Inc.
    Inventors: Mehdi Durali, Lotfi Hedhli, Roice Wille
  • Patent number: 8080621
    Abstract: A novel aqueous polymerization process for making fluoropolymer dispersions is disclosed in which non-ionic non-fluorinated emulsifier is used to produce fluoropolymer emulsions. The emulsifiers contain blocks of polyethylene glycol, polypropylene glycol and/or polytetramethylene glycol. The process and fluoropolymer produced contain no fluorinated surfactant. The fluoropolymers have excellent resistance to discoloration.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: December 20, 2011
    Assignee: Arkema Inc.
    Inventors: Ramin Amin-Sanayei, Mehdi Durali, Patrick Kappler, Greylan Burch