Patents by Inventor Eduard A. Stefanescu

Eduard A. Stefanescu 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: 20150353168
    Abstract: A method for protecting a boat hull is provided. A first polymer thermal spray coating is applied to a surface of a boat hull and to a rigid member. The rigid member is placed at a desired location on the surface of the boat hull. The rigid member is heated such that the first polymer thermal spray coating adhesively bonds the rigid member to the surface of the boat hull.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 10, 2015
    Inventors: Stephen Lloyd Galbraith, Eduard A. Stefanescu
  • Patent number: 8980377
    Abstract: A transparent, non-yellowing, polymer-clay, concrete sealer and methods for making and applying the same. The disclosed clay-based sealer provides a tough, ultraviolet-light-, temperature-, and abrasion-resistant layer that effectively protects surfaces from moisture penetration, staining, dirt, dust, and wear. The substrates to which the clay-based sealer may be applied include, but are not limited to, above and below grade concrete structures, brick, concrete masonry unit (CMU) block, grout, plaster, gunite, tile, and aggregate. The clay-based sealer may easily be applied with airless or air-assisted sprayers, or by roller, brush, or applicator pad. Once applied, the sealer requires minimal maintenance.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: March 17, 2015
    Inventors: Eduard A. Stefanescu, Sunil V. Kulkarni
  • Publication number: 20140072802
    Abstract: Powder coating compositions are comprised of particles having a diameter of from about 20 ?m to about 250 ?m comprising: (1) a hydroxyl- and/or carboxyl-terminated polyester having a number average molecular weight of from about 1000 to about 6000 and a dynamic shear viscosity of less than 5000 cPs; (2) from about 1% to about 50% by weight of the polyester of a cross-linking agent capable of reacting with the terminal groups of the polyester and wherein the powder coating composition has a density of from about 0.95 g/cm3 to about 1.8 g/cm3. These compositions cure rapidly and provide coatings having superior physical-mechanical properties. The powder coating compositions can be applied by various methods but are particularly useful for thermal spray application methods.
    Type: Application
    Filed: April 5, 2013
    Publication date: March 13, 2014
    Inventor: Eduard A. Stefanescu