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).
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Patent number: 8802216Abstract: 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: GrantFiled: March 1, 2010Date of Patent: August 12, 2014Assignee: Guardian Industries Corp.Inventors: Scott V. Thomsen, Ksenia A. Landa, Leonid Landa, Richard Hulme, Anna Broughton
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Patent number: 7858545Abstract: 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: GrantFiled: February 4, 2010Date of Patent: December 28, 2010Assignee: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
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Publication number: 20100154477Abstract: 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: ApplicationFiled: March 1, 2010Publication date: June 24, 2010Applicant: Gurdian Industries Corp.Inventors: Scott V. Thomsen, Ksenia A. Landa, Richard Hulme, Leonid Landa, Anna Broughton
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Publication number: 20100152014Abstract: 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: ApplicationFiled: February 4, 2010Publication date: June 17, 2010Applicant: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
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Patent number: 7700869Abstract: 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: GrantFiled: February 3, 2005Date of Patent: April 20, 2010Assignee: Guardian Industries Corp.Inventors: Scott V. Thomsen, Ksenia A. Landa, Leonid Landa, Richard Hulme
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Patent number: 7700870Abstract: 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: GrantFiled: May 5, 2005Date of Patent: April 20, 2010Assignee: Guardian Industries Corp.Inventors: Scott V. Thomsen, Ksenia A. Landa, Richard Hulme, Anthony V. Longobardo, Leonid Landa, Anna Broughton
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Patent number: 7683000Abstract: 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: GrantFiled: December 17, 2008Date of Patent: March 23, 2010Assignee: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
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Patent number: 7622410Abstract: 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: GrantFiled: February 23, 2005Date of Patent: November 24, 2009Assignee: Guardian Industries Corp.Inventors: Anthony V. Longobardo, Leonid Landa, Ksenia A. Landa, Scott V. Thomsen
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Patent number: 7601660Abstract: 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: GrantFiled: March 15, 2004Date of Patent: October 13, 2009Assignee: Guardian Industries Corp.Inventors: Don Tullman, Scott V. Thomsen, Richard Hulme, Leonid Landa, Ksenia A. Landa
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Patent number: 7562538Abstract: 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: GrantFiled: May 27, 2005Date of Patent: July 21, 2009Assignee: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme
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Publication number: 20090124480Abstract: 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: ApplicationFiled: December 17, 2008Publication date: May 14, 2009Applicant: Guardian Industries Corp.,Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
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Patent number: 7482294Abstract: 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: GrantFiled: August 31, 2006Date of Patent: January 27, 2009Assignee: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
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Patent number: 7482295Abstract: 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: GrantFiled: September 29, 2006Date of Patent: January 27, 2009Assignee: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
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Patent number: 7325417Abstract: 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: GrantFiled: July 5, 2005Date of Patent: February 5, 2008Assignee: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme
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Publication number: 20070215205Abstract: 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: ApplicationFiled: March 13, 2006Publication date: September 20, 2007Applicant: Guardian Industries Corp.Inventors: Scott Thomsen, Richard Hulme, Leonid Landa, Ksenia Landa
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Publication number: 20070209698Abstract: 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: ApplicationFiled: October 17, 2006Publication date: September 13, 2007Inventors: Scott Thomsen, Richard Hulme, Leonid Landa, Ksenia Landa
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Publication number: 20070207912Abstract: 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: ApplicationFiled: March 2, 2006Publication date: September 6, 2007Applicant: Guardian Industries Corp.Inventors: Richard Hulme, Scott Thomsen, Karl Platt, Leonid Landa, Ksenia Landa
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Publication number: 20070036987Abstract: 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: ApplicationFiled: August 8, 2005Publication date: February 15, 2007Inventors: Leonid Landa, Ksenia Landa, Anthony Longobardo, Vijayen Veerasamy
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Publication number: 20070037687Abstract: 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: ApplicationFiled: August 9, 2005Publication date: February 15, 2007Applicant: Guardian Industries Corp.Inventors: Scott Thomsen, Anthony Longobardo, Leonid Landa, Ksenia Landa
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Publication number: 20070032368Abstract: 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: ApplicationFiled: August 4, 2005Publication date: February 8, 2007Applicant: Guardian Industries Corp.Inventors: Leonid Landa, Ksenia Landa, Richard Hulme, Scott Thomsen, Anthony Longobardo