Patents by Inventor Adam LEWERA

Adam LEWERA 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).

  • PALLADIUM-PLATINUM SYSTEM FOR USE AS HYDROGEN STORAGE MATERIAL AND/OR ELECTROCATALYST, PREFERABLY IN FUEL-CELLS
    Publication number: 20210292162
    Abstract: The present invention relates to palladium-platinum system consisting of palladium layer covered with a platinum overlayer consisting of 1 to 10 platinum monolayers deposited on palladium for use as hydrogen storage. Such system can be used in fuel cells, hydride batteries and supercapacitors. A method for increasing hydrogen absorption kinetics of hydrogen absorption/desorption process is also disclosed.
    Type: Application
    Filed: April 6, 2021
    Publication date: September 23, 2021
    Inventors: Adam LEWERA, Piotr POLCZYNSKI, Rafal JURCZAKOWSKI
  • A METHOD OF ELECTROLESS DEPOSITION OF PLATINUM GROUP METALS AND THEIR ALLOYS AND A PLATING BATH USED THEREIN
    Publication number: 20200095686
    Abstract: The invention relates to a method of electroless deposition of platinum group metals and their alloys from a plating bath onto a substrate, comprising a reduction step of one or more platinum group metal precursors with a reducing agent, wherein the reducing agent is a primary or secondary monohydroxyalcohol or a mixture of primary or secondary monohydroxyalcohols. The invention also provides a plating bath suitable for use in said method.
    Type: Application
    Filed: June 6, 2018
    Publication date: March 26, 2020
    Inventors: Piotr POLCZYNSKI, Rafal JURCZAKOWSKI, Adam LEWERA, Pawel BACAL, Maciej SLOJEWSKI, Hubert SZABAT
  • MEANS FOR CARRYING OUT ELECTROLESS METAL DEPOSITION WITH ATOMIC SUB-MONOLAYER PRECISION
    Publication number: 20190010609
    Abstract: The present invention relates to a method of deposition of thin metal layers on different substrates by electroless chemical method. In the method of the invention, the potential of the plating solution, i.e. a solution from which the metal deposition is carried out, is controlled with a redox buffer. The appropriate plating solution is also disclosed.
    Type: Application
    Filed: December 23, 2015
    Publication date: January 10, 2019
    Inventors: Rafal JURCZAKOWSKI, Piotr POLCZYNSKI, Huber SZABAT, Aneta JANUSZEWSKA, Adam Lewera
  • Selective catalyst, particularly for electroreduction of oxygen, an electrochemical system containing thereof, an palladium-inert gas alloy and use thereof, and a cell, particularly a photovoltaic cell containing thereof
    Patent number: 10170771
    Abstract: The present invention provides a catalyst comprising a layer of metallic palladium implant¬ed with an inert gas ions, an electrochemical system containing thereof, a palladium-inert gas alloy stable in the normal conditions, use thereof and a fuel cell containing thereof.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: January 1, 2019
    Assignee: UNIWERSYTET WARSZAWSKI
    Inventors: Adam Lewera, Rafal Jurczakowski, Piotr Połczyński
  • Method of preparing pure precious metal nanoparticles with large fraction of (100) facets, nanoparticles obtained by this method and their use
    Patent number: 10040124
    Abstract: The invention provides a method of preparing pure precious metal nanoparticles of controlled sizes and having (100) facets, wherein a precursor substance contained in a reagent solution is subjected to a reduction reaction using a reducing agent contained in the reagent solution to provide nanoparticles, and the reduction reaction is stopped by rapid lowering of the reaction solution temperature. In the process of the invention, the need to use surfactants or other organic particles to stabilize the (100) facets is eliminated.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: August 7, 2018
    Assignee: Uniwersytet Warszawski
    Inventors: Rafal Jurczakowski, Justyna Piwowar, Barbara Gralec, Adam Lewera
  • PALLADIUM-PLATINUM SYSTEM FOR USE AS HYDROGEN STORAGE MATERIAL AND/OR ELECTROCATALYST, PREFERABLY IN FUEL-CELLS
    Publication number: 20180162727
    Abstract: The present invention relates to palladium-platinum system consisting of palladium layer covered with a platinum overlayer consisting of 1 to 10 platinum monolayers deposited on palladium for use as hydrogen storage. Such system can be used in fuel cells, hydride batteries and supercapacitors. A method for increasing hydrogen absorption kinetics of hydrogen absorption/desorption process is also disclosed.
    Type: Application
    Filed: December 8, 2015
    Publication date: June 14, 2018
    Inventors: Adam LEWERA, Piotr POLCZYNSKI, Rafal JURCZAKOWSKI
  • A METHOD OF PREPARING PURE PRECIOUS METAL NANOPARTICLES WITH LARGE FRACTION OF (100) FACETS, NANOPARTICLES OBTAINED BY THIS METHOD AND THEIR USE
    Publication number: 20160082515
    Abstract: The invention provides a method of preparing pure precious metal nanoparticles of controlled sizes and having (100) facets, wherein a precursor substance contained in a reagent solution is subjected to a reduction reaction using a reducing agent contained in the reagent solution to provide nanoparticles, and the reduction reaction is stopped by rapid lowering of the reaction solution temperature. In the process of the invention, the need to use surfactants or other organic particles to stabilize the (100) facets is eliminated.
    Type: Application
    Filed: July 3, 2014
    Publication date: March 24, 2016
    Inventors: Adam LEWERA, Rafal JURCZAKOWSKI, Justyna PIWOWAR, Barbara GRALEC
  • Flow system method for preparing substantially pure nanoparticles, nanoparticles obtained by this method and use thereof
    Patent number: 9221044
    Abstract: The invention relates to a method of synthesis of substantially pure nanoparticles in a continuous-flow system, in which a precursor substance solution undergoes reduction reaction using a reducing agent solution and nanoparticles are produced, wherein the reduction reaction is terminated by adding an agent neutralizing the reducing agent and a stable nanoparticle colloid is produced. In the method of the invention a need for using surfactants or other organic molecules for nanoparticle stabilization has been eliminated.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: December 29, 2015
    Assignee: UNIWERSYTET WARSZAWSKI
    Inventors: Rafal Jurczakowski, Adam Lewera, Pawel Kulboka
  • SELECTIVE CATALYST, PARTICULARLY FOR ELECTROREDUCTION OF OXYGEN, AN ELECTROCHEMICAL SYSTEM CONTAINING THEREOF, AN PALLADIUM-INERT GAS ALLOY AND USE THEREOF, AND A CELL, PARTICULARLY A PHOTOVOLTAIC CELL CONTAINING THEREOF
    Publication number: 20150155570
    Abstract: The present invention provides a catalyst comprising a layer of metallic palladium implanted with an inert gas ions, an electrochemical system containing thereof, a palladium-inert gas alloy stable in the normal conditions, use thereof and a fuel cell containing thereof.
    Type: Application
    Filed: July 30, 2013
    Publication date: June 4, 2015
    Inventors: Adam Lewera, Rafal Jurczakowski, Piotr Polczynski
  • FLOW SYSTEM METHOD FOR PREPARING SUBSTANTIALLY PURE NANOPARTICLES, NANOPARTICLES OBTAINED BY THIS METHOD AND USE THEREOF
    Publication number: 20150011655
    Abstract: The invention relates to a method of synthesis of substantially pure nanoparticles in a continuous-flow system, in which a precursor substance solution undergoes reduction reaction using a reducing agent solution and nanoparticles are produced, wherein the reduction reaction is terminated by adding an agent neutralizing the reducing agent and a stable nanoparticle colloid is produced. In the method of the invention a need for using surfactants or other organic molecules for nanoparticle stabilization has been eliminated.
    Type: Application
    Filed: September 12, 2014
    Publication date: January 8, 2015
    Inventors: Rafal JURCZAKOWSKI, Adam LEWERA, Pawel KULBOKA