Patents by Inventor Leonid Landa

Leonid Landa 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: 8802216
    Abstract: A high transmission and low iron glass is provided for use in a solar cell. The glass substrate may be patterned on at least one surface thereof. Antimony (Sb) is used in the glass to improve stability of the solar performance of the glass upon exposure to ultraviolet (UV) radiation and/or sunlight. The combination of low iron content, antimony, and/or the patterning of the glass substrate results in a substrate with high visible transmission and excellent light refracting characteristics.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: August 12, 2014
    Assignee: Guardian Industries Corp.
    Inventors: Scott V. Thomsen, Ksenia A. Landa, Leonid Landa, Richard Hulme, Anna Broughton
  • Patent number: 7858545
    Abstract: A high transmittance fairly clear/neutral colored glass composition is provided. An oxidizing agent(s) such as cerium oxide (e.g., CeO2) or the like is added to the glass batch in order to realize very oxidized conditions (i.e., to significantly lower the redox of the resulting glass). As a result of the oxidizing agent(s) used in the batch, the iron is oxidized to a very low FeO (ferrous state) content. For example, this may result in a glass having a glass redox value of no greater than 0.12 (more preferably <=0.10; even more preferably <=0.08; and most preferably <=0.05) and a % FeO (i.e., ferrous content) of from 0.0001 to 0.05%. In certain example embodiments, in order to compensate for yellow or yellow-green coloration a small amount of cobalt (Co) may be provided in the glass to enable it to realize a more neutral color.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: December 28, 2010
    Assignee: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
  • Publication number: 20100154477
    Abstract: A high transmission and low iron glass is provided for use in a solar cell. The glass substrate may be patterned on at least one surface thereof. Antimony (Sb) is used in the glass to improve stability of the solar performance of the glass upon exposure to ultraviolet (UV) radiation and/or sunlight. The combination of low iron content, antimony, and/or the patterning of the glass substrate results in a substrate with high visible transmission and excellent light refracting characteristics.
    Type: Application
    Filed: March 1, 2010
    Publication date: June 24, 2010
    Applicant: Gurdian Industries Corp.
    Inventors: Scott V. Thomsen, Ksenia A. Landa, Richard Hulme, Leonid Landa, Anna Broughton
  • Publication number: 20100152014
    Abstract: A high transmittance fairly clear/neutral colored glass composition is provided. An oxidizing agent(s) such as cerium oxide (e.g., CeO2) or the like is added to the glass batch in order to realize very oxidized conditions (i.e., to significantly lower the redox of the resulting glass). As a result of the oxidizing agent(s) used in the batch, the iron is oxidized to a very low FeO (ferrous state) content. For example, this may result in a glass having a glass redox value of no greater than 0.12 (more preferably <=0.10; even more preferably <=0.08; and most preferably <=0.05) and a % FeO (i.e., ferrous content) of from 0.0001 to 0.05%. In certain example embodiments, in order to compensate for yellow or yellow-green coloration a small amount of cobalt (Co) may be provided in the glass to enable it to realize a more neutral color.
    Type: Application
    Filed: February 4, 2010
    Publication date: June 17, 2010
    Applicant: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
  • Patent number: 7700869
    Abstract: A patterned glass substrate is provided for use in a solar cell. The glass substrate is both patterned on at least one surface thereof and has a low iron content. The combination of low iron content, optional oxidizing agent, and the patterning of the glass substrate results in a substrate with high visible transmission and excellent light refracting characteristics.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: April 20, 2010
    Assignee: Guardian Industries Corp.
    Inventors: Scott V. Thomsen, Ksenia A. Landa, Leonid Landa, Richard Hulme
  • Patent number: 7700870
    Abstract: A high transmission and low iron glass is provided for use in a solar cell. The glass substrate may be patterned on at least one surface thereof. Antimony (Sb) is used in the glass to improve stability of the solar performance of the glass upon exposure to ultraviolet (UV) radiation and/or sunlight. The combination of low iron content, antimony, and/or the patterning of the glass substrate results in a substrate with high visible transmission and excellent light refracting characteristics.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: April 20, 2010
    Assignee: Guardian Industries Corp.
    Inventors: Scott V. Thomsen, Ksenia A. Landa, Richard Hulme, Anthony V. Longobardo, Leonid Landa, Anna Broughton
  • Patent number: 7683000
    Abstract: A high transmittance fairly clear/neutral colored glass composition is provided. An oxidizing agent(s) such as cerium oxide (e.g., CeO2) or the like is added to the glass batch in order to realize very oxidized conditions (i.e., to significantly lower the redox of the resulting glass). As a result of the oxidizing agent(s) used in the batch, the iron is oxidized to a very low FeO (ferrous state) content. For example, this may result in a glass having a glass redox value of no greater than 0.12 (more preferably <=0.10; even more preferably <=0.08; and most preferably <=0.05) and a % FeO (i.e., ferrous content) of from 0.0001 to 0.05%. In certain example embodiments, in order to compensate for yellow or yellow-green coloration a small amount of cobalt (Co) may be provided in the glass to enable it to realize a more neutral color.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: March 23, 2010
    Assignee: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
  • Patent number: 7622410
    Abstract: A grey glass composition employing in its colorant portion, in certain example embodiments, iron, cobalt, nickel, and at least one of erbium and titanium. The use of erbium and/or titanium has been found to improve coloration of the grey glass, and improve tunability of the same. In certain example embodiments, the ratio of cobalt oxide to nickel oxide is from 0.22 to 0.30 in order to achieve desired coloration in certain example embodiments.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: November 24, 2009
    Assignee: Guardian Industries Corp.
    Inventors: Anthony V. Longobardo, Leonid Landa, Ksenia A. Landa, Scott V. Thomsen
  • Patent number: 7601660
    Abstract: Glass is provided so as to have high visible transmission and/or fairly clear or neutral color. In certain example embodiments, the glass may include a base glass (e.g., soda lime silica base glass) and, in addition, by weight percentage, from 0.01 to 0.30% total iron (expressed as Fe2O3). The glass may be made using a batch redox of at least +7.5.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: October 13, 2009
    Assignee: Guardian Industries Corp.
    Inventors: Don Tullman, Scott V. Thomsen, Richard Hulme, Leonid Landa, Ksenia A. Landa
  • Patent number: 7562538
    Abstract: A technique of manufacturing glass having fairly clear color and/or high visible transmission is provided. In certain example embodiments of this invention, it has surprisingly been found that by using carbon-containing compound(s) including CxHyOz.mH2O, excellent melting and refining can be achieved in the manufacture of glass, and not as much ferrous iron is formed compared to the use of elemental carbon as a refining agent. Such compound(s) are especially advantageous when highly transparent clear glass is desired, in that less ferrous iron is formed and thus transmittance and coloration can be improved.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: July 21, 2009
    Assignee: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme
  • Publication number: 20090124480
    Abstract: A high transmittance fairly clear/neutral colored glass composition is provided. An oxidizing agent(s) such as cerium oxide (e.g., CeO2) or the like is added to the glass batch in order to realize very oxidized conditions (i.e., to significantly lower the redox of the resulting glass). As a result of the oxidizing agent(s) used in the batch, the iron is oxidized to a very low FeO (ferrous state) content. For example, this may result in a glass having a glass redox value of no greater than 0.12 (more preferably <=0.10; even more preferably <=0.08; and most preferably <=0.05) and a % FeO (i.e., ferrous content) of from 0.0001 to 0.05%. In certain example embodiments, in order to compensate for yellow or yellow-green coloration a small amount of cobalt (Co) may be provided in the glass to enable it to realize a more neutral color.
    Type: Application
    Filed: December 17, 2008
    Publication date: May 14, 2009
    Applicant: Guardian Industries Corp.,
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
  • Patent number: 7482294
    Abstract: A high transmittance fairly clear/neutral colored glass composition is provided. An oxidizing agent(s) such as cerium oxide (e.g., CeO2) or the like is added to the glass batch in order to realize very oxidized conditions (i.e., to significantly lower the redox of the resulting glass). As a result of the oxidizing agent(s) used in the batch, the iron is oxidized to a very low FeO (ferrous state) content. For example, this may result in a glass having a glass redox value of no greater than 0.12 (more preferably <=0.10; even more preferably <=0.08; and most preferably <=0.05) and a % FeO (i.e., ferrous content) of from 0.0001 to 0.05%. In certain example embodiments, in order to compensate for yellow or yellow-green coloration a small amount of cobalt (Co) may be provided-in the glass to enable it to realize a more neutral color.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: January 27, 2009
    Assignee: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
  • Patent number: 7482295
    Abstract: A high transmittance fairly clear/neutral colored glass composition is provided. An oxidizing agent(s) such as cerium oxide (e.g., CeO2) or the like is added to the glass batch in order to realize very oxidized conditions (i.e., to significantly lower the redox of the resulting glass). As a result of the oxidizing agent(s) used in the batch, the iron is oxidized to a very low FeO (ferrous state) content. For example, this may result in a glass having a glass redox value of no greater than 0.12 (more preferably <=0.10; even more preferably <=0.08; and most preferably <=0.05) and a % FeO (i.e., ferrous content) of from 0.0001 to 0.05%. In certain example embodiments, in order to compensate for yellow or yellow-green coloration a small amount of cobalt (Co) may be provided in the glass to enable it to realize a more neutral color.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: January 27, 2009
    Assignee: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
  • Patent number: 7325417
    Abstract: A glass having a visible transmission of no greater than 28% and low IR transmission, and employing a colorant portion: total iron (expressed as Fe2O3): 0.7 to 1.8% cobalt oxide (e.g., Co3O4): 0.001 to 1.0% titanium oxide (e.g., TiO2): 0.25 to 3.0% selenium (e.g., Se): 0 to 0.0020% chromium oxide (e.g., Cr2O3): 0 to 0.010%.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: February 5, 2008
    Assignee: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme
  • Publication number: 20070215205
    Abstract: A high transmission low iron glass, that is highly oxidized, is provided for use in solar cells or the like. In certain example embodiments, the glass composition used for the glass is a low-iron type glass composition which is highly oxidized thereby permitting the glass to realize a combination of high visible transmission (Lta or Tvis), high ultraviolet (UV) and/or infrared (IR) transmission, and high total solar (TS) transmission. These features may be achieved without the need for antimony in certain example instances. The glass substrate used in a solar cell may be patterned in certain example embodiments of this invention.
    Type: Application
    Filed: March 13, 2006
    Publication date: September 20, 2007
    Applicant: Guardian Industries Corp.
    Inventors: Scott Thomsen, Richard Hulme, Leonid Landa, Ksenia Landa
  • Publication number: 20070209698
    Abstract: Certain example embodiments of this invention relate to a high transmission low iron glass, which is highly oxidized and made using the float process, for use in photovoltaic devices such as solar cells or the like. In certain example embodiments, the glass composition used for the glass is made via the float process using an extremely high and positive batch redox in order to reduce % FeO to a low level and permit the glass to consistently realize a combination of high visible transmission (Lta or Tvis), high infrared (IR) transmission, and high total solar (TS) transmission. The glass substrate may be patterned or not patterned in different example embodiments of this invention.
    Type: Application
    Filed: October 17, 2006
    Publication date: September 13, 2007
    Inventors: Scott Thomsen, Richard Hulme, Leonid Landa, Ksenia Landa
  • Publication number: 20070207912
    Abstract: This invention relates to a method of making soda-lime-silica based glass. In certain example embodiments, boron oxide (e.g., B2O3) is used in the glass for reducing the refining time (or increasing the refining rate) thereof. The boron oxide may be introduced into the glass batch or melt in the form of boric acid, sodium tetraborate pentahydrate, sodium tetraborate decahydrate, sodium pentahydrate, or in any other suitable form. In certain example embodiments, the resulting soda-lime-silica based glass ends up including from about 0.1 to 3%, more preferably from about 0.1 to 2.5%, and most preferably from about 0.5 to 2.0% (e.g., about 1%), boron oxide. It has been found that the use of boron oxide, and/or the form in which the same is introduced into the glass, is advantageous in that it permits the refining time of the glass to be substantially reduced.
    Type: Application
    Filed: March 2, 2006
    Publication date: September 6, 2007
    Applicant: Guardian Industries Corp.
    Inventors: Richard Hulme, Scott Thomsen, Karl Platt, Leonid Landa, Ksenia Landa
  • Publication number: 20070036987
    Abstract: A coated article includes a glass substrate that supports a coating such as a low-E (low emissivity) coating. In certain example embodiments, the glass substrate is formed of a soda-lime-silica based glass composition manufactured using a float process. In certain example embodiments, lithium oxide (e.g., LiO2) and/or potassium oxide (K2O) is used in the soda-lime-silica based glass substrate in order to reduce sodium migration and/or improve surface stability. Such coated articles are useful, for example and without limitation, in architectural, vehicular and/or residential glass window applications.
    Type: Application
    Filed: August 8, 2005
    Publication date: February 15, 2007
    Inventors: Leonid Landa, Ksenia Landa, Anthony Longobardo, Vijayen Veerasamy
  • Publication number: 20070037687
    Abstract: A grey glass composition is suitable for architectural and/or vehicle window applications. The grey glass may achieve a combination of good visible transmission, a low SHGC, and desirable coloration. In certain example embodiments, the grey glass includes iron, erbium (Er), neodymium (Nd) and/or praseodymium (Pr) in the colorant portion of the glass.
    Type: Application
    Filed: August 9, 2005
    Publication date: February 15, 2007
    Applicant: Guardian Industries Corp.
    Inventors: Scott Thomsen, Anthony Longobardo, Leonid Landa, Ksenia Landa
  • Publication number: 20070032368
    Abstract: A soda-lime-silica based glass composition for manufacturing on a float line that has a faster refining rate due to the introduction of alkali earth oxides such as BaO, ZnO and/or SrO in the amount of from about 1-4% in total. These oxides replace part or all of the MgO in the base glass composition thereby decreasing the overall MgO content in the glass composition to about 2% or less. The glass can realize a lower viscosity at high temperatures so that refining of the melt may occur faster.
    Type: Application
    Filed: August 4, 2005
    Publication date: February 8, 2007
    Applicant: Guardian Industries Corp.
    Inventors: Leonid Landa, Ksenia Landa, Richard Hulme, Scott Thomsen, Anthony Longobardo