Patents by Inventor Stewart J. Lustgarten

Stewart J. Lustgarten 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: 9428668
    Abstract: A hydrophilic cross-linked ionic polycaprolactone polymer composition formed by the process of subjecting hydrophobic caprolactone or a hydrophobic caprolactone monomer to a source of ionizing radiation selected from the group consisting of an Electron Acceleration (E beam), Gamma II, Cobolt, X-ray or a source of UV radiation to form an ionic cross linked polycaprolactone polymer consisting of a soluble component part and an insoluble component part in a gel fraction % of soluble to insoluble parts, adjusting the duration of ionizing radiation and/or the intensity of the radiation until the concentration of the soluble component part is above at least about 65% by weight of the cross linked polymer wherein the cross linked polycaprolactone polymer is converted from a hydrophobic to a hydrophilic state. A coating of the hydrophobic polycaprolactone when in contact with water forms a boundary layer with very low contact angle.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: August 30, 2016
    Inventor: Stewart J. Lustgarten
  • Publication number: 20160040032
    Abstract: A hydrophilic polymer and method which forms a low contact angle, non-turbulent laminar flow boundary layer on a material surface such as the surface of a vessel's hull. The method comprises exposing polycaprolactone (PCL) to ionizing irradiation, such as; Electron Acceleration (E-Beam), Gamma II, Cobalt and X-ray to form a cross linked polymer composition having a soluble component and an insoluble component with the concentration of the soluble component being above at least 63% of the polymer composition such that the “XL-PCL” polymer is hydrophilic. A hydrophilic coating is then formed by adding a solvent to the “XL-PCL” polymer composition, filtering out as much of the insoluble PCL component from the remaining solvent solution and volatilizing the solvent leaving a hydrophilic “XL-PCL polymer, comprised of the XL-PCL” insoluble component.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 11, 2016
    Inventor: Stewart J. Lustgarten
  • Patent number: 9241881
    Abstract: A dental material composed of hydrophilic polycaprolactone formed by the process of exposing a hydrophobic caprolactone to ionizing irradiation from a radiation source selected from the group consisting of an Electron Acceleration (E beam), Gamma II, Cobolt, X-ray or a source of UV radiation to form a cross linked polycaprolactone composition consisting of two distinct phases one of which is soluble and the other non-soluble, and adjusting the duration of ionizing radiation and/or the intensity of the radiation to cause the concentration of the soluble phase to be above at least about 65% by weight of the cured polymeric composition whereby the hydrophobic caprolactone becomes hydrophilic.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: January 26, 2016
    Inventor: Stewart J. Lustgarten
  • Publication number: 20140271496
    Abstract: A dental material composed of hydrophilic polycaprolactone formed by the process of exposing a hydrophobic caprolactone to ionizing irradiation from a radiation source selected from the group consisting of an Electron Acceleration (E beam), Gamma II, Cobolt, X-ray or a source of UV radiation to form a cross linked polycaprolactone composition consisting of two distinct phases one of which is soluble and the other non-soluble, and adjusting the duration of ionizing radiation and/or the intensity of the radiation to cause the concentration of the soluble phase to be above at least about 65% by weight of the cured polymeric composition whereby the hydrophobic caprolactone becomes hydrophilic.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Inventor: Stewart J. LUSTGARTEN
  • Patent number: 4412015
    Abstract: The dental filler material is formed from a selection of one or more finely divided inorganic particles of, barium containing glass or zeolite crystals with up to 100% of such particles having a coating thereon of a polymerized acrylate containing monomers or oligomers. The dental composite is formed using the dental filler material and a methacrylate based polymeric resin binder system.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: October 25, 1983
    Inventors: Stewart J. Lustgarten, Jurgen Engelbrecht
  • Patent number: 4295941
    Abstract: The method of the present invention involves fabricating a cast metal framework from a non-precious metal alloy containing nickel, electroplating a thin film of gold over a predetermined surface area of the framework, distributing finely divided gold particles of varying size about the electroplated surface and firing successive layers of porcelain over the predetermined surface area.
    Type: Grant
    Filed: December 7, 1979
    Date of Patent: October 20, 1981
    Assignee: Healthco Inc.
    Inventor: Stewart J. Lustgarten
  • Patent number: 4141144
    Abstract: The dental material of the present invention comprises a polymerizable binder, a polymerization agent and an additive comprising finely divided particles of muscovite mica in a range of from about 1 to 20 percent by weight of the dental material for direct dental filling and restoration applications and in a range of from about 1 to 30 percent for cosmetically treating the surface of a tooth as a veneer or paint-on.
    Type: Grant
    Filed: January 26, 1977
    Date of Patent: February 27, 1979
    Inventor: Stewart J. Lustgarten