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: 7169722
    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 23, 2003
    Date of Patent: January 30, 2007
    Assignee: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
  • Publication number: 20070021289
    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: September 29, 2006
    Publication date: January 25, 2007
    Applicant: Guardian Industries Corp.
    Inventors: Ksenia Landa, Leonid Landa, Richard Hulme, Scott Thomsen
  • Publication number: 20060293163
    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: August 31, 2006
    Publication date: December 28, 2006
    Applicant: Guardian Industries Corp.
    Inventors: Ksenia Landa, Leonid Landa, Richard Hulme, Scott Thomsen
  • Patent number: 7151065
    Abstract: A grey glass composition employing in its colorant portion at least iron (Fe2O3/FeO), cerium, cobalt and selenium is provided. The glass allows high visible transmission, and satisfactory IR and UV absorption, while at the same time achieving desired grey color. In certain example embodiments, the colorant portion includes, or may consist essentially of: total iron (expressed as Fe2O3): ?0.25 to 0.70% cerium oxide: ?0.01 to 1.0% selenium: 0.0001 to 0.05% cobalt oxide: 0.0001 to 0.05% titanium oxide: ???0 to 1.0% glass redox: >=0.30.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: December 19, 2006
    Assignee: Guardian Industries Corp.
    Inventors: Scott V. Thomsen, Richard Hulme, Leonid Landa, Ksenia A. Landa
  • Patent number: 7144837
    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: January 6, 2003
    Date of Patent: December 5, 2006
    Assignee: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
  • Publication number: 20060270545
    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: Application
    Filed: May 27, 2005
    Publication date: November 30, 2006
    Applicant: Guardian Industries Corp.
    Inventors: Ksenia Landa, Leonid Landa, Richard Hulme
  • Publication number: 20060248923
    Abstract: A method of making float glass is provided that results in a transparent conductive oxide (TCO) films being integrally formed with the float glass at the tin side thereof. In particular, a donor(s) such as antimony and/or an oxide thereof is added to the glass batch during the process of manufacture. The donor diffuses into the tin oxide inclusive layer adjacent the tin bath during the “float” manufacturing process, thereby increasing the number of electrons in the tin oxide inclusive layer so as to form a TCO film at the tin side of the glass.
    Type: Application
    Filed: August 2, 2005
    Publication date: November 9, 2006
    Applicant: Guardian Industries Corp.
    Inventors: Alexey Krasnov, Ksenia Landa, Leonid Landa
  • Publication number: 20060249199
    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: May 5, 2005
    Publication date: November 9, 2006
    Applicant: Guardian Industries Corp.
    Inventors: Scott Thomsen, Ksenia Landa, Richard Hulme, Anthony Longobardo, Leonid Landa, Anna Broughton
  • Publication number: 20060189472
    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: Application
    Filed: February 23, 2005
    Publication date: August 24, 2006
    Applicant: Guardian Industries Corp.
    Inventors: Anthony Longobardo, Leonid Landa, Ksenia Landa, Scott Thomsen
  • Publication number: 20060169316
    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: Application
    Filed: February 3, 2005
    Publication date: August 3, 2006
    Applicant: Guardian Industries Corp.
    Inventors: Scott Thomsen, Ksenia Landa, Leonid Landa, Richard Hulme
  • Patent number: 7037869
    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: total iron (expressed as Fe2O3): 0.01 to 0.30% erbium oxide (e.g., Er2O3): 0.01 to 0.30%.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: May 2, 2006
    Assignee: Guardian Industries Corp.
    Inventors: Leonid Landa, Ksenia A. Landa, Scott V. Thomsen, Richard Hulme
  • Patent number: 7030047
    Abstract: Glass is provided so as to have high visible transmission and/or fairly clear or neutral color. In certain example embodiments of making glass according to examples of the invention, the glass batch may include a base glass (e.g., soda lime silica base glass) and, in addition, by weight percentage: total iron (expressed as Fe2O3): 0.01 to 0.30% erbium oxide (e.g., Er2O3): 0.01 to 0.30% cerium oxide (e.g., CeO2): ?0.005 to 0.30%.? Optionally, neodymium oxide (e.g., Nd2O3) may also be provided in the glass in certain example embodiments. In other embodiments, the cerium oxide may be replaced with or supplemented by NaNO3 or some other nitrate(s) as an oxidizer.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: April 18, 2006
    Assignee: Guardian Industries Corp.
    Inventors: Leonid Landa, Ksenia A. Landa, Scott V. Thomsen, Richard Hulme
  • Publication number: 20050245385
    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: Application
    Filed: July 5, 2005
    Publication date: November 3, 2005
    Applicant: Guardian Industries Corp.
    Inventors: Ksenia Landa, Leonid Landa, Richard Hulme
  • Patent number: 6953759
    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: August 26, 2002
    Date of Patent: October 11, 2005
    Assignee: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme
  • Patent number: 6949484
    Abstract: Glass is provided so as to have high visible transmission and/or fairly clear or neutral color. In certain example embodiments of making glass according to examples of the invention, the glass batch may include a base glass (e.g., soda lime silica base glass) and, in addition, by weight percentage: total iron (expressed as Fe2O3): ?0.01 to 0.30% erbium oxide (e.g., Er2O3): ?0.01 to 0.30% cerium oxide (e.g., CeO2): 0.005 to 0.30%. Optionally, neodymium oxide (e.g., Nd2O3) may also be provided in the glass in certain example embodiments. In other embodiments, the cerium oxide may be replaced with or supplemented by NaNO3 or some other nitrate(s) as an oxidizer.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: September 27, 2005
    Assignee: Guardian Industries Corp.
    Inventors: Leonid Landa, Ksenia A. Landa, Scott V. Thomsen, Richard Hulme
  • Publication number: 20050188725
    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: Application
    Filed: March 15, 2004
    Publication date: September 1, 2005
    Applicant: Guardian Industries Corp.
    Inventors: Don Tullman, Scott Thomsen, Richard Hulme, Leonid Landa, Ksenia Landa
  • Publication number: 20050020430
    Abstract: A grey glass composition employing in its colorant portion at least iron (Fe2O3/FeO), cerium, cobalt and selenium is provided. The glass allows high visible transmission, and satisfactory IR and UV absorption, while at the same time achieving desired grey color. In certain example embodiments, the colorant portion includes, or may consist essentially of: total iron (expressed as Fe2O3): ?0.25 to 0.70% cerium oxide: ?0.01 to 1.0% selenium: 0.0001 to 0.05% cobalt oxide: 0.0001 to 0.05% titanium oxide: ???0 to 1.0% glass redox: >=0.30.
    Type: Application
    Filed: July 21, 2003
    Publication date: January 27, 2005
    Inventors: Scott Thomsen, Richard Hulme, Leonid Landa, Ksenia Landa
  • Publication number: 20040209757
    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: 1 total iron (expressed as Fe2O3): 0.01 to 0.30% erbium oxide (e.g., Er2O3): 0.01 to 0.30%.
    Type: Application
    Filed: February 25, 2004
    Publication date: October 21, 2004
    Applicant: Guardian Industries Corp.
    Inventors: Leonid Landa, Ksenia A. Landa, Scott V. Thomsen, Richard Hulme
  • Publication number: 20040180775
    Abstract: Glass is provided so as to have high visible transmission and/or fairly clear or neutral color. In certain example embodiments of making glass according to examples of the invention, the glass batch may include a base glass (e.g., soda lime silica base glass) and, in addition, by weight percentage: 1 total iron (expressed as Fe2O3): 0.01 to 0.30% erbium oxide (e.g., Er2O3): 0.01 to 0.30% cerium oxide (e.g., CeO2):  0.005 to 0.30%.
    Type: Application
    Filed: March 29, 2004
    Publication date: September 16, 2004
    Applicant: Guardian Industries Corp.
    Inventors: Leonid Landa, Ksenia A. Landa, Scott V. Thomsen, Richard Hulme
  • Publication number: 20040121896
    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: September 23, 2003
    Publication date: June 24, 2004
    Applicant: Guardian Industries Corp.
    Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen