Patents by Inventor Paolina Atanassova

Paolina Atanassova 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: 20150210550
    Abstract: The invention is directed to high surface area graphitized carbon and to processes for making high surface area graphitized carbon. The process includes steps of graphitizing and increasing the surface area of (in either order) a starting carbon material to form high surface area graphitized carbon. The step of increasing the surface area optionally comprises an oxidizing step (e.g., through steam etching) or template removal from composite particles. The invention is also directed to catalyst particles and electrodes employing catalyst particles that are formed from the high surface area graphitized carbon.
    Type: Application
    Filed: April 3, 2015
    Publication date: July 30, 2015
    Inventors: Yipeng Sun, Shen Jian-Ping, Gordon Rice, Paolina Atanassova, Geoffrey D. Moeser
  • Publication number: 20150123042
    Abstract: A paste suitable for a negative plate of a lead-acid battery, the paste comprising lead oxide and carbon black, wherein the carbon black has the following properties: (a) a BET surface area between about 100 and about 2100 m2/g; and (b) an oil adsorption number (OAN) in the range of about 35 to about 360 cc/100 g, provided that the oil absorption number is less than the 0.14×the BET surface area+65.
    Type: Application
    Filed: January 8, 2015
    Publication date: May 7, 2015
    Inventors: Paolina Atanassova, Berislav Blizananc, Miodrag Oljaca, Toivo T. Kodas, Geoffrey D. Moeser, Pavel A. Kossyrev, Ned J. Hardman
  • Patent number: 9017837
    Abstract: The invention is directed to high surface area graphitized carbon and to processes for making high surface area graphitized carbon. The process includes steps of graphitizing and increasing the surface area of (in either order) a starting carbon material to form high surface area graphitized carbon. The step of increasing the surface area optionally comprises an oxidizing step (e.g., through steam etching) or template removal from composite particles. The invention is also directed to catalyst particles and electrodes employing catalyst particles that are formed from the high surface area graphitized carbon.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: April 28, 2015
    Assignee: Cabot Corporation
    Inventors: Yipeng Sun, Jian-Ping Shen, Gordon Rice, Paolina Atanassova, Geoffrey D. Moeser
  • Patent number: 8932482
    Abstract: A paste suitable for a negative plate of a lead-acid battery, the paste comprising lead oxide and carbon black, wherein the carbon black has the following properties: (a) a BET surface area between about 100 and about 2100 m2/g; and (b) an oil adsorption number (OAN) in the range of about 35 to about 360 cc/100 g, provided that the oil absorption number is less than the 0.14×the BET surface area+65.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 13, 2015
    Assignee: Cabot Corporation
    Inventors: Paolina Atanassova, Berislav Blizanac, Miodrag Oljaca, Toivo T. Kodas, Geoffrey D. Moeser, Pavel A. Kossyrev, Ned J. Hardman
  • Publication number: 20140093775
    Abstract: Disclosed herein are negative active material compositions, comprising: a carbonaceous material having a surface area of at least 250 m2/g; and an organic molecule expander, wherein the ratio of carbonaceous material to expander ranges from 5:1 to 1:1, and wherein the composition has a median pore size ranging from 0.8 ?m to 4 ?m. Also disclosed are electrodes and batteries comprising such compositions, and methods of making thereof.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: CABOT CORPORATION
    Inventors: Ned J. Hardman, Paolina Atanassova, Miodrag Oljaca, Berislav Blizanac, Kenneth C. Koehlert, Aurelien L. DuPasquier
  • Publication number: 20130295462
    Abstract: A carbon black having a combination of properties with values in ranges selected to promote high conductivity, high hydrophobicity, and reduced outgassing in lead acid batteries while maintaining high charge acceptance and cycleability. The carbon black has a Brunauer-Emmett-Teller (BET) surface area ranging from 100 m2/g to 1100 m2/g combined with one or more properties, e.g., a surface energy (SE) of 10 mJ/m2 or less, and/or a Raman microcrystalline planar size (La) of at least 22 ?, e.g., ranging from 22 ? to 50 ?. In some cases, the carbon black has a statistical thickness surface area (STSA) of at least 100 m2/g, e.g., ranging from 100 m2/g to 600 m2/g.
    Type: Application
    Filed: April 4, 2013
    Publication date: November 7, 2013
    Inventors: Paolina Atanassova, Berislav Blizanac, Kenneth C. Koehlert, Geoffrey D. Moeser, Miodrag Oljaca, Yipeng Sun, Danny Pierre, Jeffrey S. Sawrey
  • Publication number: 20120248383
    Abstract: A paste suitable for a negative plate of a lead-acid battery comprises at least (a) a lead-based active material and an expander mixture comprising (b) carbon, (c) barium sulfate and (d) a lignosulfonate, wherein at least part of at least two of said components (a) to (d) are present in the paste as composite particles.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 4, 2012
    Applicant: Cabot Corporation
    Inventors: Paolina Atanassova, Yipeng Sun, Berislav Blizanac, Toivo T. Kodas, Mark J. Hampden-smith, Miodrag Oljaca
  • Patent number: 8252485
    Abstract: In a method of producing a particulate electrocatalyst composition, a precursor medium comprising at least a first metal precursor, a liquid vehicle, and a substrate precursor to substrate particles is atomized into precursor droplets. The droplets are then heated to a reaction temperature of not greater than 700° C. to form composite particles comprising said first metal at least partly in an oxide form dispersed on said substrate particles. The composite particles are then collected and are heated at a first treatment temperature no greater than 250° C. in the presence of a reducing atmosphere to at least partly convert said oxide form to the metal.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: August 28, 2012
    Assignee: Cabot Corporation
    Inventors: Yipeng Sun, Paolina Atanassova, James Brewster, Leonard P. Perez, Hanwei Lei, Berislav Blizanac
  • Publication number: 20120211703
    Abstract: A paste suitable for a negative plate of a lead-acid battery, the paste comprising lead oxide and carbon black, wherein the carbon black has the following properties: (a) a BET surface area between about 100 and about 2100 m2/g; and (b) an oil adsorption number (OAN) in the range of about 35 to about 360 cc/100 g, provided that the oil absorption number is less than the 0.14×the BET surface area+65.
    Type: Application
    Filed: October 28, 2010
    Publication date: August 23, 2012
    Applicant: Cabot Corporation
    Inventors: Paolina Atanassova, Berislav Blizanac, Miodrag Oljaca, Toivo T. Kodas, Geoffrey D. Moeser, Pavel A. Kossyrev, Ned J. Hardman
  • Patent number: 8227117
    Abstract: Electrodes and electrocatalyst layers incorporating modified carbon products. The modified carbon products may advantageously enhance the properties of an electrode or electrode layer, leading to more efficiency within the a fuel cell or similar device.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: July 24, 2012
    Assignee: Cabot Corporation
    Inventors: Mark J. Hampden-Smith, Paolina Atanassova, Gordon L. Rice, James Caruso, James Brewster, Rimple Bhatia, Paul Napolitano, Bogdan Gurau
  • Publication number: 20120115031
    Abstract: A paste suitable for a negative plate of a lead-acid battery comprises lead oxide and composite particles comprising carbon and silica.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 10, 2012
    Applicant: CABOT CORPORATION
    Inventors: Paolina ATANASSOVA, Berislav BLIZANAC, Toivo KODAS, Mark HAMPDEN-SMITH, Miodrag OLJACA
  • Patent number: 8163669
    Abstract: Materials that are useful for absorption enhanced reforming (AER) of a fuel, including absorbent materials and catalyst materials and methods for using the materials. The materials can be fabricated by spray processing. The use of the materials in AER can produce a H2 product gas having a high H2 content and a low level of carbon oxides.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: April 24, 2012
    Assignee: Cabot Corporation
    Inventors: Mark J. Hampden-Smith, Paolina Atanassova, Jian-Ping Shen, Paul Napolitano, James Brewster
  • Patent number: 8080495
    Abstract: A catalyst composition comprises a particulate support and catalyst nanoparticles on the particulate support. The catalyst nanoparticles comprise an alloy of platinum and palladium in an atomic ratio of from about 25:75 to about 75:25 and are present in a concentration of between about 3 and about 10 wt % weight percent of the catalyst composition. The catalyst composition has an X-ray diffraction pattern that is substantially free of the (311) diffraction peak assignable to PtxPd1-x, where 0.25?x?0.75.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: December 20, 2011
    Assignee: Cabot Corporation
    Inventors: Miodrag Oljaca, Ranko P Bontchev, Paolina Atanassova, Berislav Blizanac, Yipeng Sun, Matthew Ezenyilimba, George Fotou, Kenneth Koehlert
  • Publication number: 20110245073
    Abstract: A catalyst composition comprises a particulate support and catalyst nanoparticles on the particulate support. The catalyst nanoparticles comprise an alloy of platinum and palladium in an atomic ratio of from about 25:75 to about 75:25 and are present in a concentration of between about 3 and about 10 wt % weight percent of the catalyst composition. The catalyst composition has an X-ray diffraction pattern that is substantially free of the (311) diffraction peak assignable to PtxPd1-x, where 0.25?x?0.75.
    Type: Application
    Filed: August 6, 2010
    Publication date: October 6, 2011
    Applicant: CABOT CORPORATION
    Inventors: Miodrag OLJACA, Ranko P. BONTCHEV, Paolina ATANASSOVA, Berislav BLIZANAC, Yipeng SUN, Matthew EZENYILIMBA, George FOTOU, Kenneth C. Koehlert
  • Patent number: 7968191
    Abstract: Modified carbon products including a metal group attached to the modified carbon product. The modified carbon products are particularly useful for various applications such as catalysis, electronic conduction, ionic conduction, absorbents, heat transfer and luminescence.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: June 28, 2011
    Assignee: Cabot Corporation
    Inventors: Mark J. Hampden-Smith, James Caruso, Paolina Atanassova, Agathagelos Kyrlidis
  • Patent number: 7906453
    Abstract: Processes for forming catalyst particles utilizing a defoamer are described. Also described are processes for forming catalysts, where the processes comprise providing a correlation between defoamer concentration and catalyst particle morphology, and determining an amount of defoamer to include in a precursor composition to obtain the target morphology based on the correlation.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: March 15, 2011
    Assignee: Cabot Corporation
    Inventors: Matthew Ezenyilimba, Paolina Atanassova, Yipeng Sun, Gordon Rice, James Brewster
  • Publication number: 20100158791
    Abstract: Materials that are useful for absorption enhanced reforming (AER) of a fuel, including absorbent materials and catalyst materials and methods for using the materials. The materials can be fabricated by spray processing. The use of the materials in AER can produce a H2 product gas having a high H2 content and a low level of carbon oxides.
    Type: Application
    Filed: August 25, 2009
    Publication date: June 24, 2010
    Applicant: CABOT CORPORATION
    Inventors: Mark J. Hampden-Smith, Paolina Atanassova, Jian-Ping Shen, James Brewster, Paul Napolitano
  • Patent number: 7732002
    Abstract: Precursor compositions in the form of a tape that can be transferred to a substrate and converted to an electronic feature at a relatively low temperature, such as not greater than about 200° C. The tape composition can be disposed on a carrier to form a ribbon structure that is flexible and can be handled in a variety of industrial processes.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: June 8, 2010
    Assignee: Cabot Corporation
    Inventors: Toivo T. Kodas, Mark J. Hampden-Smith, Karel Vanheusden, Hugh Denham, Aaron D. Stump, Allen B. Schult, Paolina Atanassova, Klaus Kunze
  • Patent number: 7732372
    Abstract: Solid absorbent materials that are useful for absorption of chemical species from a fluid, such as a gas stream or a liquid stream. The absorbent materials are formed by spray processing and posses a well-defined chemical composition and microstructure. The absorbent materials can have a high absorption capacity for a chemical species such as H2S, CO2, NOx, and H2 and have a high recylability, such that the chemical species can be absorbed and desorbed over a large number of cycles.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: June 8, 2010
    Assignee: Cabot Corporation
    Inventors: Mark J. Hampden-Smith, Paolina Atanassova, Jian-Ping Shen, James Brewster, Paul Napolitano, Agathagelos Kyrlidis
  • Patent number: 7722687
    Abstract: Energy devices such as batteries and methods for fabricating the energy devices. The devices are small, thin and lightweight, yet provide sufficient power for many handheld electronics.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: May 25, 2010
    Assignee: Cabot Corporation
    Inventors: Mark J. Hampden-Smith, Toivo T. Kodas, Plamen Atanassov, Paolina Atanassova, Klaus Kunze, Paul Napolitano, David Dericotte, Rimple Bhatia