Patents by Inventor Ferenc Darvas

Ferenc Darvas 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: 11718921
    Abstract: The present invention relates to the field of generating gaseous hydrogen at high pressures and with high purity via electrolysis of water by means of an electrolyzer unit (100) with a novel structure.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: August 8, 2023
    Assignee: THALESNANO ZRT
    Inventors: Csaba Janáky, Egon Kecsenovity, Antal Danyi, Balázs Endrödi, Viktor Török, Ferenc Darvas, Richard Jones
  • Publication number: 20220259745
    Abstract: An electrolyzer cell, electrolyzer setup, and related methods are provided for converting gaseous carbon dioxide to gas-phase products at elevated pressures with high conversion rates via electrolysis performed by the electrolyzer cell (100?). The electrolyzer cell (100?) is a multi-stack CO2 electrolyzer cell having individual stacks (40) that each include bipolar plate assemblies that have unique gas and fluid flow architecture formed therein.
    Type: Application
    Filed: May 25, 2019
    Publication date: August 18, 2022
    Inventors: Antal DANYI, Ferenc DARVAS, Balázs ENDRÕDI, Csaba JANÁKY, Richard JONES, Egon KECSENOVITY, Angelika SAMU, Viktor TÖRÖK
  • Publication number: 20210310136
    Abstract: The present invention relates to the field of generating gaseous hydrogen at high pressures and with high purity via electrolysis of water by means of an electrolyzer unit (100) with a novel structure.
    Type: Application
    Filed: August 20, 2018
    Publication date: October 7, 2021
    Inventors: Csaba JANÁKY, Egon KECSENOVITY, Antal DANYI, Balázs ENDR?DI, Viktor TÖRÖK, Ferenc DARVAS, Richard JONES
  • Patent number: 9901897
    Abstract: A mesofluidic reactor performs a chemical reaction of a starting material. A liquid phase starting material is introduced into a spraying head equipped with an ultrasound generating piezoelectric crystal unit. An inert/reagent gas feeds into the spraying head, connected to a reactor tube arranged within a thermally insulated multi-zone heating unit. For solid phase, an inert/reagent gas is introduced into a solids container connected to a spraying head equipped with an ultrasound generating piezoelectric crystal unit. The spraying head connects to a reactor tube arranged within a thermally insulated multi-zone heating unit. In either case, a reactor tube outlet connects to a cooled product trap to collect conversed substances. The spraying head generates a particle size distribution with nano and micro sized particles for the liquid phase and nano, micro or larger particles for the solid phase. The inert/reagent gas is preheated over the piezoelectric crystal unit's surface.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: February 27, 2018
    Assignee: Cominnex ZRT
    Inventors: Ferenc Darvas, László Csaba Lengyel, Teréz Vágó
  • Publication number: 20170021328
    Abstract: A mesofluidic reactor performs a chemical reaction of a starting material. A liquid phase starting material is introduced into a spraying head equipped with an ultrasound generating piezoelectric crystal unit. An inert/reagent gas feeds into the spraying head, connected to a reactor tube arranged within a thermally insulated multi-zone heating unit. For solid phase, an inert/reagent gas is introduced into a solids container connected to a spraying head equipped with an ultrasound generating piezoelectric crystal unit. The spraying head connects to a reactor tube arranged within a thermally insulated multi-zone heating unit. In either case, a reactor tube outlet connects to a cooled product trap to collect conversed substances. The spraying head generates a particle size distribution with nano and micro sized particles for the liquid phase and nano, micro or larger particles for the solid phase. The inert/reagent gas is preheated over the piezoelectric crystal unit's surface.
    Type: Application
    Filed: March 31, 2015
    Publication date: January 26, 2017
    Inventors: Ferenc Darvas, László Csaba Lengyel, Teréz Vágó
  • Publication number: 20160361293
    Abstract: The invention relates to a nanostructured (nanoparticular) composition comprising Indomethacine, its pharmaceutically acceptable salts and co-crystals, processes for the preparation thereof, and compositions useful for pharmaceutical applications. The size of the nanoparticles according to the invention is smaller than 500 nm. Indomethacine (INN) or Indomethacine (USAN, previously BAN) is a non-steroidal anti-inflammatory drug (NSAID), which is used for the treatment of fever, inflammation, spasm, swells and inflammations. The machanism of action of Indomethacine is the inhibition of the synthesis of prostaglandin. It is marketed under the trade names of Indocin, Indocid, Indochron E-R, and Indocin-SR.
    Type: Application
    Filed: February 25, 2015
    Publication date: December 15, 2016
    Applicant: DARHOLDING KFT.
    Inventors: Genovéva FILIPCSEI, Zsolt ÖTVÖS, Gábor HELTOVICS, Ferenc DARVAS
  • Patent number: 9504652
    Abstract: The present invention is directed to nanostructured Aprepitant compositions, process for the preparation thereof and pharmaceutical compositions containing them. The nanoparticles of Aprepitant according to the invention have an average particle size of less than about 200 nm. The stable nanostructured particles of the invention are presented by increased solubility, dissolution rate, permeability and bioequivalent or enhanced biological performance characterized by significantly decreased fed/fasted effect compared to the reference and marketed drug. Aprepitant is a chemical compound that belongs to a class of drugs called substance P antagonists (SPA). It mediates its effect by acting on neurokinin 1 receptor. Aprepitant is manufactured by Merck & Co. under the brand name Emend for prevention of acute and delayed chemotherapy-induced nausea and vomiting (CINV) and for prevention of postoperative nausea and vomiting.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: November 29, 2016
    Assignee: Druggability Technologies IP Holdco (Jersey) Ltd.
    Inventors: Genovéva Filipcsei, Zsolt Ötvös, Gábor Heltovics, Ferenc Darvas
  • Patent number: 8540939
    Abstract: A continuous flow system for the synthesis of nanoparticles includes a feeding unit connected to the first reactor a flow path, at least one first reactor unit possessing a heatable reactor-zone, a second reactor unit which follows the first reactor in the same cascade; a mixing unit and a second feeding unit between the reactor units, and feeding pumps connected to a raw material source and/or a control unit which is capable of controlling at least one pressure controller and/or controlling the temperature of at least one heatable reactor-zone; each heatable reactor-zone is followed by a cooling unit in the cascade. In addition, a process for the synthesis of nanoparticles, preferably metal-containing nanoparticles, and nanoparticles of biologically active organic molecules wherein the process is accomplished using the system.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: September 24, 2013
    Assignee: Darholding Vagyonkezelo Korlatolt Felelossegu Tarsasag
    Inventors: Krisztián Niesz, Atilla Wootsch, Maxime Groualle, Zsolt Ötvös, Ferenc Darvas
  • Publication number: 20130210794
    Abstract: The present invention is directed to nanostructured Ezetimibe compositions, process for the preparation thereof and pharmaceutical compositions containing them. The nanoparticles of Ezetimibe according to the invention have an average particle size of less than about 400 nm. The stable nanostructured particles of the invention are presented by increased solubility, dissolution rate, permeability and bioequivalent or enhanced biological performance compared to the marketed drug. Ezetimibe is an anti-hyperlipidemic medication that is used to lower cholesterol levels. It acts by decreasing cholesterol absorption in the intestine.
    Type: Application
    Filed: June 17, 2011
    Publication date: August 15, 2013
    Inventors: Genovéva Filipcsei, Zsolt Ötvös, Gábor Heltovics, Ferenc Darvas
  • Publication number: 20130209521
    Abstract: The present invention is directed to nanostructured Aprepitant compositions, process for the preparation thereof and pharmaceutical compositions containing them. The nanoparticles of Aprepitant according to the invention have an average particle size of less than about 200 nm. The stable nanostructured particles of the invention are presented by increased solubility, dissolution rate, permeability and bioequivalent or enhanced biological performance characterized by significantly decreased fed/fasted effect compared to the reference and marketed drug. Aprepitant is a chemical compound that belongs to a class of drugs called substance P antagonists (SPA). It mediates its effect by acting on neurokinin 1 receptor. Aprepitant is manufactured by Merck & Co. under the brand name Emend for prevention of acute and delayed chemotherapy-induced nausea and vomiting (CINV) and for prevention of postoperative nausea and vomiting.
    Type: Application
    Filed: June 17, 2011
    Publication date: August 15, 2013
    Inventors: Genovéva Filipcsei, Zsolt Ötvös, Gábor Heltovics, Ferenc Darvas
  • Publication number: 20130202706
    Abstract: The present invention is directed to nanostructured Atorvastatin, its pharmaceutically acceptable salts and compositions of them, process for the preparation thereof and pharmaceutical compositions containing them. The nanoparticles of Atorvastain, its pharmaceutically acceptable salts and compositions of them according to the invention have an average particle size of less than about 600 nm. The stable amorphous nanostructured particles of the present invention are characterized by increased solubility and bioequivalent biological performance compared to the marketed crystalline drug. Atorvastatin is a member of the drug class known as statins, used for lowering blood cholesterol. It also stabilizes plaque and prevents strokes through anti-inflammatory and other mechanisms.
    Type: Application
    Filed: June 8, 2011
    Publication date: August 8, 2013
    Applicant: DRUGGABILITY TECHNOLOGIES IP HOLDCO (JERSEY) LTD.
    Inventors: Genovéva Filipcsei, Zsolt Ötvös, Gábor Heltovics, Ferenc Darvas
  • Publication number: 20120148637
    Abstract: The present invention is directed to nanostructured (nanoparticulated) Olmesartan or its pharmaceutically acceptable ester, preferable Olmesartan Medoxomil, or co-crystal compositions, process for the preparation thereof and pharmaceutical compositions containing them. The nanoparticles of Olmesartan or its pharmaceutically acceptable ester, preferable Olmesartan Medoxomil, or co-crystal according to the invention have an average particle size of less than about 500 nm. Olmesartan Medoxomil is an angiotensin II receptor antagonist used to treat high blood pressure. The prodrug Olmesartan Medoxomil is marketed worldwide by Daiichi Sankyo, Ltd. and in the United States by Daiichi Sankyo, Inc.
    Type: Application
    Filed: June 18, 2010
    Publication date: June 14, 2012
    Inventors: Genovéva Filipcsei, Zsolt Ötvös, Katalin Pongrácz, Ferenc Darvas
  • Publication number: 20120141561
    Abstract: The present invention is directed to nanostructured (nanoparticulated) Candesartan or its pharmaceutically acceptable ester, preferable Candesartan Cilexetil, or co-crystal compositions, process for the preparation thereof and pharmaceutical compositions containing them. The nanoparticles of Candesartan or its pharmaceutically acceptable ester, preferable Candesartan Cilexetil, or co-crystal according to the invention have an average particle size of less than about 500 nm. Candesartan Cilexetil is a prodrug, is hydrolyzed to Candesartan during absorption from the gastrointestinal tract. Candesartan is a selective AT1 subtype angiotensin II receptor antagonist.
    Type: Application
    Filed: June 18, 2010
    Publication date: June 7, 2012
    Inventors: Genovéva Filipcsei, Zsolt Ötvös, Katalin Pongrácz, Ferenc Darvas
  • Publication number: 20120135053
    Abstract: The present invention is directed to nanostructured (nanoparticulated) Telmisartan compositions, process for the preparation thereof and pharmaceutical compositions containing them. The nanoparticles of Telmisartan according to the invention have an average particle size of less than about 600 nm. Telmisartan is an angiotensin II receptor antagonist (ARB) used in the management of hypertension.
    Type: Application
    Filed: June 18, 2010
    Publication date: May 31, 2012
    Inventors: Genovéva Filipcsei, Zsolt Ötvös, Katalin Pongrácz, Ferenc Darvas
  • Publication number: 20120128740
    Abstract: The present invention is directed to nanostructured (nanoparticulated) Sildenafil base, its pharmaceutically acceptable salts and co-crystals, compositions containing them, process for the preparation thereof and pharmaceutical compositions containing them. The nanoparticles of Sildenafil base, its pharmaceutically acceptable salts and co-crystals, compositions containing them according to the invention have an average particle size of less than about 500 nm. Sildenafil citrate is inhibiting cGMP specific phosphodiesterase type 5 (PDEV), an enzyme that regulates blood flow in the penis. The compositions of the invention are useful in the treatment of male or female sexual dysfunction and pulmonary arterial hypertension (PAH).
    Type: Application
    Filed: June 18, 2010
    Publication date: May 24, 2012
    Inventors: Genovéva Filipcsei, Zsolt Ötvös, Katalin Pongrácz, Ferenc Darvas
  • Patent number: 8152974
    Abstract: The invention relates to a porous electrode used in an electrochemical cell, containing a carrier and/or catalytic agent, which is characterized by that it consists of two or more layers with different average pore sizes, out of which layers the contact layer with the smallest average pore size is in contact with the membrane, and one or more supporting layers with a greater average pore size are linked to the other side of this contact layer. Furthermore, the invention relates to a procedure for the manufacturing of such electrodes and to electrochemical cells containing such electrodes.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: April 10, 2012
    Assignee: ThalesNano Zrt.
    Inventors: Ferenc Darvas, Dániel Szalay, Lajos Gödörházy
  • Patent number: 7988919
    Abstract: A process for hydrogenating a sample in a pressure range below supercritical pressure values includes supplying at least a solvent of the sample to be hydrogenated by a feed pump with a constant volume rate into a flow path to create a base solution; adding the sample being dissolved into the flow path; feeding hydrogen into the flow path through a valve configured to transmit hydrogen only into a single direction; leading the dissolved sample in the presence of a catalyst through a hydrogenation reactor, where the reactor is inserted into a section of the flow path located after the hydrogen feeding position; maintaining the pressure of the reaction in a given pressure range by element of a pressure-adjusting unit, and collecting a hydrogenate formed within the hydrogenation reactor in a product receptacle connected to the end of the flow path.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: August 2, 2011
    Assignee: ThalesNano Zrt
    Inventors: Ferenc Darvas, Lajos Godorhazy, Tamas Karancsi, Daniel Szalay, Ferenc Boncz, Laszlo Urge
  • Publication number: 20110104043
    Abstract: The subject of the invention is the (50) continuous flow system for the synthesis of nanoparticles which consist of the (1a) feeding unit connected to the flow path, at least one (2) first reactor unit possessing the (13) heatable reactor-zone, the (3) second reactor unit which follows (2) in the same cascade; the (5) mixing unit and the (1b) second feeding unit between (2) and (3) reactor units, the (9) and (10) feeding pumps connected to the raw material source and/or (22) control unit which is capable of controlling at least one (18) pressure controller and/or controlling the temperature of at least one (13) heatable reactor-zone; each (13) heatable reactor-zone is followed by (14) cooling unit in the cascade. In addition, the subject of this invention is a process for the synthesis of nanoparticles, preferably metal-containing nanoparticles, and nanoparticles of biologically active organic molecules wherein the process is accomplished in the device according to FIG. 1.
    Type: Application
    Filed: April 28, 2009
    Publication date: May 5, 2011
    Applicant: Nangenex Nanotechnology Incorporated
    Inventors: Krisztián Niesz, Attila Wootsch, Maxime Groualle, Zsolt Ötvös, Ferenc Darvas
  • Patent number: 7919055
    Abstract: The present invention relates to a method of forming a sealed channel on the surface of a sheet made of a material with a particular extent of plasticity, the sheet forming a reactor block for a microfluidic reactor.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: April 5, 2011
    Assignee: ThalesNano Nanotechnológiai Zrt.
    Inventors: Dániel Szalay, Norbert Varga, Ferenc Boncz, Ferenc Darvas, Tamás Karancsi, Lajos Gödörházy
  • Publication number: 20110034704
    Abstract: A process for hydrogenating a sample in a pressure range below supercritical pressure values includes supplying at least a solvent of the sample to be hydrogenated by a feed pump with a constant volume rate into a flow path to create a base solution; adding the sample being dissolved into the flow path; feeding hydrogen into the flow path through a valve configured to transmit hydrogen only into a single direction; leading the dissolved sample in the presence of a catalyst through a hydrogenation reactor, where the reactor is inserted into a section of the flow path located after the hydrogen feeding position; maintaining the pressure of the reaction in a given pressure range by element of a pressure-adjusting unit, and collecting a hydrogenate formed within the hydrogenation reactor in a product receptacle connected to the end of the flow path.
    Type: Application
    Filed: October 19, 2010
    Publication date: February 10, 2011
    Applicant: THALESNANO ZRT.
    Inventors: Ferenc Darvas, Lajos Gödörházy, Tamás Karancsi, Dániel Szalay, Ferenc Boncz, László Ürge