Patents by Inventor David R. Haskins
David R. Haskins 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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Publication number: 20230183124Abstract: The present invention provides a glass sheet having soda-lime-silica glass composition with a high visible light transmittance (LtC) of at least 89% with a dominant wavelength (DW) from about 490 to 505 nanometers and purity (Pe) of no more than 1% for control thickness of 5.66 mm and methods of making the same. The glass composition comprising a low iron raw material, a total iron oxide (Fe2O3) of 0.02 to 0.06 wt. %, ferrous (FeO) from 0.006 to 0.02 wt. %, redox (FeO/Fe2O3) from about 0.30 to 0.55, Cr2O3 from about 0.3 to 10 ppm, TiO2 from about 50 to 500 ppm, SnO2 from about 10 to 500 ppm, and a critical amount from about 0.10 to 0.25 wt. % of SO3. The low content of iron oxide is achieved by the partial substitution of regular raw materials by low iron raw materials, with a complete substitution of regular dolomite by a low iron dolomite with a maximum content of 0.020 wt. % Fe2O3.Type: ApplicationFiled: February 3, 2020Publication date: June 15, 2023Inventors: José Guadalupe Cid-Aguilar, David R. Haskins, Michael J. Buchanan
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Publication number: 20200180997Abstract: The present invention refers to a glass composition and a method for the commercial production of a solar control thin green glass mainly for use in the automotive industry such as symmetric-hybrid windshields or asymmetric-hybrid windshields, sidelights and rear windows, which includes a basic composition of soda-lime-silica glass, and consists essentially, in weight percentage: from 1.30 to 2.50% of total iron expressed as Fe2O3; from 15 to 40% of Fe2+ (Ferrous) and from 0.15 to 0.65% of FeO, expressed as Fe2O3; from about 0.05 to about 0.30% of SO3; from about 0.02 to about 1.0% of TiO2; from about 0.0002 to about 0.03% of Cr2O3; and from about 0.0002 to about 0.015% of CuO.Type: ApplicationFiled: December 6, 2018Publication date: June 11, 2020Inventors: José Guadalupe CID-AGUILAR, David R. Haskins, Michael Ulizio, DeWitt W. Lampman
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Patent number: 10333009Abstract: A glass sheet has an electrically conductive film having a sheet resistance in the range of 9.5 to 14.0 ohms/square; an emissivity in the range of 0.14 to 0.17 and an absorption coefficient of greater than 1.5×103 cm?1 in the wavelength range of 400-1100 nanometers, and a surface roughness of less than 15 nanometers Root Means Square. A glass sheet of another embodiment of the invention has an electrically conductive film having a phosphorous-fluorine doped tin oxide pyrolytically deposited film on the surface of the glass sheet, wherein the ratio of phosphorous precursor to tin precursor is in the range of greater than 0-0.4. The coated glass sheets of the invention can be used in the manufacture of multi sheet insulating units, OLEDs and solar cells.Type: GrantFiled: August 23, 2016Date of Patent: June 25, 2019Assignee: Vitro Flat Glass LLCInventors: Ashtosh Ganjoo, David R. Haskins, James W. McCamy, Gary J. Nelis, Peter Tausch
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Publication number: 20160359059Abstract: A glass sheet has an electrically conductive film having a sheet resistance in the range of 9.5 to 14.0 ohms/square; an emissivity in the range of 0.14 to 0.17 and an absorption coefficient of greater than 1.5×103 cm?1 in the wavelength range of 400-1100 nanometers, and a surface roughness of less than 15 nanometers Root Means Square. A glass sheet of another embodiment of the invention has an electrically conductive film having a phosphorous-fluorine doped tin oxide pyrolytically deposited film on the surface of the glass sheet, wherein the ratio of phosphorous precursor to tin precursor is in the range of greater than 0-0.4. The coated glass sheets of the invention can be used in the manufacture of multi sheet insulating units, OLEDs and solar cells.Type: ApplicationFiled: August 23, 2016Publication date: December 8, 2016Inventors: Ashtosh Ganjoo, David R. Haskins, James W. McCamy, Gary J. Nelis, Peter Tausch
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Patent number: 9463999Abstract: A glass sheet has an electrically conductive film having a sheet resistance in the range of 9.5 to 14.0 ohms/square; an emissivity in the range of 0.14 to 0.17 and an absorption coefficient of greater than 1.5×103 cm?1 in the wavelength range of 400-1100 nanometers, and a surface roughness of less than 15 nanometers Root Means Square. A glass sheet of another embodiment of the invention has an electrically conductive film having a phosphorous-fluorine doped tin oxide pyrolytically deposited film on the surface of the glass sheet, wherein the ratio of phosphorous precursor to tin precursor is in the range of greater than 0-0.4. The coated glass sheets of the invention can be used in the manufacture of multi sheet insulating units, OLEDs and solar cells.Type: GrantFiled: January 8, 2013Date of Patent: October 11, 2016Assignee: PPG Industries Ohio, Inc.Inventors: Ashtosh Ganjoo, David R. Haskins, James W. McCamy, Gary J. Nelis, Peter Tausch
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Patent number: 8815402Abstract: A solar mirror includes an opaque reflective coating on a surface of a transparent substrate facing away from the sun and a transparent reflective coating on the opposite surface of the substrate. The transparent reflective coating increases the percent reflection of wavelengths in selected ranges, e.g. wavelengths in the infrared range to increase the total solar energy reflected by the solar mirror to increase the solar energy directed to a receiver that converts solar energy to electric and/or thermal energy.Type: GrantFiled: March 28, 2011Date of Patent: August 26, 2014Assignee: PPG Industries Ohio, Inc.Inventors: David R. Haskins, Mehran Arbab, Andrew V. Wagner
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Publication number: 20110240009Abstract: A solar mirror includes an opaque reflective coating on a surface of a transparent substrate facing away from the sun and a transparent reflective coating on the opposite surface of the substrate. The transparent reflective coating increases the percent reflection of wavelengths in selected ranges, e.g. wavelengths in the infrared range to increase the total solar energy reflected by the solar mirror to increase the solar energy directed to a receiver that converts solar energy to electric and/or thermal energy.Type: ApplicationFiled: March 28, 2011Publication date: October 6, 2011Applicant: PPG INDUSTRIES OHIO, INV.Inventors: David R. Haskins, Mehran Arbab, Andrew V. Wagner
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Publication number: 20010025002Abstract: The present invention provides a glass composition having a neutral gray color and a luminous (visible) transmittance within a range that allows the glass to be used as privacy glazing in a vehicle. The glass of the present invention has a standard soda-lime-silica flat glass base composition and uses iron, cobalt and selenium, and optionally nickel, as the colorants. It has also been found that a nickel-free, neutral gray colored glass with a luminous transmittance (C.I.E. illuminant A) of up to 40% at a thickness of 3.9 millimeters may be attained by using as colorants: 0.59 to 0.99 wt. % of the total glass Fe2O3 (total iron), no greater than 0.30 wt. % FeO; 60 to 180 PPM CoO and 5 to 30 PPM Se. It has been found that a nickel-bearing, neutral gray colored glass with a luminous transmittance (C.I.E. illuminant A) of up to but less than 40% at a thickness of 3.9 millimeters may be attained by using as colorants: 0.35 to 1.1 wt. % of the total glass Fe2O3 (total iron), no greater than 0.30 wt.Type: ApplicationFiled: December 22, 2000Publication date: September 27, 2001Inventors: John F. Krumwiede, Anthony V. Longobardo, Larry J. Shelestak, David R. Haskins
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Patent number: 6274523Abstract: The present invention provides a glass composition having a neutral gray color and a luminous (visible) transmittance within a range that allows the glass to be used as privacy glazing in a vehicle. The glass of the present invention has a standard soda-lime-silica flat glass base composition and uses iron, cobalt and selenium, and optionally nickel, as the colorants. It has also been found that a nickel-free, neutral gray colored glass with a luminous transmittance (C.I.E. illuminant A) of up to 40% at a thickness of 3.9 millimeters may be attained by using as colorants: 0.59 to 0.99 wt. % of the total glass Fe2O3 (total iron), no greater than 0.30 wt. % FeO; 60 to 180 PPM CoO and 5 to 30 PPM Se. It has been found that a nickel-bearing, neutral gray colored glass with a luminous transmittance (C.I.E. illuminant A) of up to but less than 40% at a thickness of 3.9 millimeters may be attained by using as colorants: 0.35 to 1.1 wt. % of the total glass Fe2O3 (total iron), no greater than 0.30 wt.Type: GrantFiled: September 15, 1995Date of Patent: August 14, 2001Assignee: PPG Industris Ohio, Inc.Inventors: John F. Krumwiede, Anthony V. Longobardo, Larry J. Shelestak, David R. Haskins
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Patent number: 5688727Abstract: The present invention provides a blue colored glass using a standard soda-lime-silica glass base composition and additionally iron and cobalt as solar radiation absorbing materials and colorants. In particular, the blue colored glass includes about 0.53 to 1.1 wt. % total iron, preferably about 0.6 to 0.85 wt. % and about 5 to 40 PPM CoO, preferably about 15 to 30 PPM and a luminous transmittance of at least 55%. If desired, the composition may include up to about 100 PPM Cr.sub.2 O.sub.3. The redox ratio for the glass of the present invention is maintained between about 0.25 to 0.35, preferably between about 0.28 to 0.33. The glass color is characterized by a dominant wavelength (DW) of about 485 to 491 nanometers and an excitation purity (Pe) of about 3 to 18 percent. In one particular embodiment of the invention, the color of the glass is characterized by a dominant wavelength in the range of about 487 to 489 nanometers and an excitation purity of about 3 to 8 percent at a thickness of about 0.084 to 0.Type: GrantFiled: June 17, 1996Date of Patent: November 18, 1997Assignee: PPG Industries, Inc.Inventors: Larry J. Shelestak, David R. Haskins
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Patent number: 4886539Abstract: In a method of vacuum refining molten glass or the like, selenium is provided in the molten glass to serve as a foaming agent, which yields improved refining. Alternatively, colored glass compositions that include selenium as a colorant are refined at higher than normal pressures to retain selenium in the glass without sacrificing refining performance.Type: GrantFiled: April 3, 1989Date of Patent: December 12, 1989Assignee: PPG Industries, Inc.Inventors: Richard L. Gerutti, David R. Haskins, Robert B. Heithoff, Ronald L. Schwenninger, Wright M. Welton
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Patent number: 4798616Abstract: In a method of making glass or the like, wherein the batch materials are liquefied in a distinct zone from the refiner, the liquefied material is heated in an intermediate stage before being fed to the refiner. In preferred embodiments the intermediate stage comprises one or more channels extending from the side of the refiner.Type: GrantFiled: August 31, 1987Date of Patent: January 17, 1989Assignee: PPG Industries, Inc.Inventors: Leonard A. Knavish, David R. Haskins