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: 7169722Abstract: 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 23, 2003Date of Patent: January 30, 2007Assignee: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
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Publication number: 20070021289Abstract: 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: September 29, 2006Publication date: January 25, 2007Applicant: Guardian Industries Corp.Inventors: Ksenia Landa, Leonid Landa, Richard Hulme, Scott Thomsen
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Publication number: 20060293163Abstract: 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: August 31, 2006Publication date: December 28, 2006Applicant: Guardian Industries Corp.Inventors: Ksenia Landa, Leonid Landa, Richard Hulme, Scott Thomsen
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Patent number: 7151065Abstract: 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: GrantFiled: July 21, 2003Date of Patent: December 19, 2006Assignee: Guardian Industries Corp.Inventors: Scott V. Thomsen, Richard Hulme, Leonid Landa, Ksenia A. Landa
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Patent number: 7144837Abstract: 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: January 6, 2003Date of Patent: December 5, 2006Assignee: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen
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Publication number: 20060270545Abstract: 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: ApplicationFiled: May 27, 2005Publication date: November 30, 2006Applicant: Guardian Industries Corp.Inventors: Ksenia Landa, Leonid Landa, Richard Hulme
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Publication number: 20060248923Abstract: 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: ApplicationFiled: August 2, 2005Publication date: November 9, 2006Applicant: Guardian Industries Corp.Inventors: Alexey Krasnov, Ksenia Landa, Leonid Landa
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Publication number: 20060249199Abstract: 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: May 5, 2005Publication date: November 9, 2006Applicant: Guardian Industries Corp.Inventors: Scott Thomsen, Ksenia Landa, Richard Hulme, Anthony Longobardo, Leonid Landa, Anna Broughton
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Publication number: 20060189472Abstract: 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: ApplicationFiled: February 23, 2005Publication date: August 24, 2006Applicant: Guardian Industries Corp.Inventors: Anthony Longobardo, Leonid Landa, Ksenia Landa, Scott Thomsen
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Publication number: 20060169316Abstract: 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: ApplicationFiled: February 3, 2005Publication date: August 3, 2006Applicant: Guardian Industries Corp.Inventors: Scott Thomsen, Ksenia Landa, Leonid Landa, Richard Hulme
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Patent number: 7037869Abstract: 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: GrantFiled: February 25, 2004Date of Patent: May 2, 2006Assignee: Guardian Industries Corp.Inventors: Leonid Landa, Ksenia A. Landa, Scott V. Thomsen, Richard Hulme
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Patent number: 7030047Abstract: 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: GrantFiled: March 29, 2004Date of Patent: April 18, 2006Assignee: Guardian Industries Corp.Inventors: Leonid Landa, Ksenia A. Landa, Scott V. Thomsen, Richard Hulme
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Publication number: 20050245385Abstract: 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: ApplicationFiled: July 5, 2005Publication date: November 3, 2005Applicant: Guardian Industries Corp.Inventors: Ksenia Landa, Leonid Landa, Richard Hulme
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Patent number: 6953759Abstract: 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: August 26, 2002Date of Patent: October 11, 2005Assignee: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme
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Patent number: 6949484Abstract: 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: GrantFiled: June 10, 2003Date of Patent: September 27, 2005Assignee: Guardian Industries Corp.Inventors: Leonid Landa, Ksenia A. Landa, Scott V. Thomsen, Richard Hulme
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Publication number: 20050188725Abstract: 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: ApplicationFiled: March 15, 2004Publication date: September 1, 2005Applicant: Guardian Industries Corp.Inventors: Don Tullman, Scott Thomsen, Richard Hulme, Leonid Landa, Ksenia Landa
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Publication number: 20050020430Abstract: 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: ApplicationFiled: July 21, 2003Publication date: January 27, 2005Inventors: Scott Thomsen, Richard Hulme, Leonid Landa, Ksenia Landa
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Publication number: 20040209757Abstract: 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: ApplicationFiled: February 25, 2004Publication date: October 21, 2004Applicant: Guardian Industries Corp.Inventors: Leonid Landa, Ksenia A. Landa, Scott V. Thomsen, Richard Hulme
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Publication number: 20040180775Abstract: 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: ApplicationFiled: March 29, 2004Publication date: September 16, 2004Applicant: Guardian Industries Corp.Inventors: Leonid Landa, Ksenia A. Landa, Scott V. Thomsen, Richard Hulme
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Publication number: 20040121896Abstract: 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: September 23, 2003Publication date: June 24, 2004Applicant: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme, Scott V. Thomsen