Patents by Inventor Florencio Garcia
Florencio Garcia 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: 11851595Abstract: A lighting apparatus includes a semiconductor light source in direct contact with a polymer composite comprising a color stable Mn4+ doped phosphor, wherein the lighting apparatus has a color shift of ?1.5 MacAdam ellipses after operating for at least 2,000 hour at a LED current density greater than 2 A/cm2, a LED wall-plug efficiency greater than 40%, and a board temperature greater than 25° C.Type: GrantFiled: July 13, 2021Date of Patent: December 26, 2023Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: James Edward Murphy, Anant Achyut Setlur, Florencio Garcia, Robert Joseph Lyons, Ashfaqul Islam Chowdhury, Nagaveni Karkada, Prasanth Kumar Nammalwar, William Winder Beers
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Publication number: 20230265337Abstract: A converter element is provided, comprising a first conversion region comprising a first phosphor, a second conversion region comprising a second phosphor, wherein the first phosphor has upon excitation a faster radiation decay lifetime than the second phosphor, wherein at least one of the first and second phosphor is embedded in a matrix material, wherein the matrix material comprises a three-dimensionally crosslinked polysiloxane having an organic content of less than 40 wt %. Further, a method for producing a converter element and a radiation emitting device are provided.Type: ApplicationFiled: February 22, 2022Publication date: August 24, 2023Inventors: Florencio GARCIA, Alan PIQUETTE, Gertrud KRÄUTER
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Publication number: 20210340443Abstract: A lighting apparatus includes a semiconductor light source in direct contact with a polymer composite comprising a color stable Mn4+ doped phosphor, wherein the lighting apparatus has a color shift of ?1.5 MacAdam ellipses after operating for at least 2,000 hour at a LED current density greater than 2 A/cm2, a LED wall-plug efficiency greater than 40%, and a board temperature greater than 25° C.Type: ApplicationFiled: July 13, 2021Publication date: November 4, 2021Inventors: James Edward MURPHY, Anant Achyut SETLUR, Florencio GARCIA, Robert Joseph LYONS, Ashfaqul Islam CHOWDHURY, Nagaveni KARKADA, Prasanth Kumar NAMMALWAR, William Winder BEERS
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Patent number: 11098246Abstract: A lighting apparatus includes a semiconductor light source in direct contact with a polymer composite comprising a color stable Mn4+ doped phosphor, wherein the lighting apparatus has a color shift of ?1.5 MacAdam ellipses after operating for at least 2,000 hour at a LED current density greater than 2 A/cm2, a LED wall-plug efficiency greater than 40%, and a board temperature greater than 25° C.Type: GrantFiled: March 6, 2019Date of Patent: August 24, 2021Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: James Edward Murphy, Anant Achyut Setlur, Florencio Garcia, Robert Joseph Lyons, Ashfaqul Islam Chowdhury, Nagaveni Karkada, Prasanth Kumar Nammalwar, William Winder Beers
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Patent number: 11008509Abstract: A population of coated phosphor particles is presented. Each coated phosphor particle has a core including a Mn4+ doped phosphor and a shell including aluminum oxide, titanium oxide, zirconium oxide, zinc oxide, tin oxide, silicon dioxide, hafnium oxide, indium oxide, indium tin oxide, potassium fluoride, titanium nitride, boron nitride, silicon nitride, a polymer material, or a combination thereof. A process for preparing the population of coated phosphor particles is also presented.Type: GrantFiled: June 27, 2017Date of Patent: May 18, 2021Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: James Edward Murphy, Florencio Garcia
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Publication number: 20190203116Abstract: A lighting apparatus includes a semiconductor light source in direct contact with a polymer composite comprising a color stable Mn4+ doped phosphor, wherein the lighting apparatus has a color shift of ?1.5 MacAdam ellipses after operating for at least 2,000 hour at a LED current density greater than 2 A/cm2, a LED wall-plug efficiency greater than 40%, and a board temperature greater than 25° C.Type: ApplicationFiled: March 6, 2019Publication date: July 4, 2019Inventors: James Edward MURPHY, Anant Achyut SETLUR, Florencio GARCIA, Robert Joseph LYONS, Ashfaqul Islam CHOWDHURY, Nagaveni KARKADA, Prasanth Kumar NAMMALWAR, William Winder BEERS
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Publication number: 20190136128Abstract: A population of coated phosphor particles is presented. Each coated phosphor particle has a core including a Mn4+ doped phosphor and a shell including aluminum oxide, titanium oxide, zirconium oxide, zinc oxide, tin oxide, silicon dioxide, hafnium oxide, indium oxide, indium tin oxide, potassium fluoride, titanium nitride, boron nitride, silicon nitride, a polymer material, or a combination thereof. A process for preparing the population of coated phosphor particles is also presented.Type: ApplicationFiled: June 27, 2017Publication date: May 9, 2019Inventors: James Edward Murphy, Florencio Garcia
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Patent number: 10230022Abstract: A lighting apparatus is presented. The lighting apparatus includes a semiconductor light source, a color stable Mn4+ doped phosphor and a quantum dot material, each of the color stable Mn4+ doped phosphor and the quantum dot material being radiationally coupled to the semiconductor light source. A percentage intensity loss of the color stable Mn4+ doped phosphor after exposure to a light flux of at least 20 w/cm2 at a temperature of at least 50 degrees Celsius for at least 21 hours is ?4%. A backlight device including the lighting apparatus is also presented.Type: GrantFiled: December 8, 2015Date of Patent: March 12, 2019Assignee: General Electric CompanyInventors: Anant Achyut Setlur, James Edward Murphy, Florencio Garcia, Srinivas Prasad Sista
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Patent number: 10193030Abstract: A lighting apparatus includes an LED light source radiationally coupled to a composite material including a phosphor of formula I and a thermally conductive material dispersed in at least a portion of a binder material. The thermally conductive material includes a material selected from the group consisting of indium oxide, tin oxide, indium tin oxide, calcium oxide, barium oxide, strontium oxide, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, strontium hydroxide, zinc hydroxide, aluminum phosphate, magnesium phosphate, calcium phosphate, barium phosphate, strontium phosphate, diamond, graphene, polyethylene nanofibers, carbon nanotubes, silver metal nanoparticles, copper metal nanoparticles, gold metal nanoparticles, aluminum metal nanoparticles, boron nitride, silicon nitride, an alkali metal halide, calcium fluoride, magnesium fluoride, a compound of formula II, and combinations thereof.Type: GrantFiled: August 8, 2016Date of Patent: January 29, 2019Assignee: GENERAL ELECTRIC COMPANYInventors: Digamber Gurudas Porob, James Edward Murphy, Florencio Garcia, Megan Marie Brewster
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Patent number: 10131835Abstract: A phosphor composition is derived from combining K2SiF6:Mn4+ in solid form with a saturated solution of a manganese-free complex fluoride including a composition of formula I: A3[MF6], where A is selected from Na, K, Rb, and combinations thereof and M is selected from Al, Ga, In, Sc, Y, Gd, and combinations thereof. The composition of formula I: A3[MF6] has a water solubility lower than a water solubility of K2SiF6. A lighting apparatus including the phosphor composition is also provided.Type: GrantFiled: December 16, 2014Date of Patent: November 20, 2018Assignee: General Electric CompanyInventors: Anant Achyut Setlur, Robert Joseph Lyons, Prasanth Kumar Nammalwar, James Edward Murphy, Florencio Garcia, Ravikumar Hanumantha
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Patent number: 9938457Abstract: Methods for fabricating coated semiconductor elements are presented. The methods include the steps of combining a phosphor of formula I and a polymer binder to form a composite material, providing a semiconductor wafer including IniGajAlkN, wherein 0?i; 0?j; 0?k, and a sum of i, j and k is equal to 1, coating the composite material on a surface of the semiconductor wafer to form a coated semiconductor wafer, and dicing the coated semiconductor wafer using a cutting fluid apparatus to form one or more coated semiconductor elements. A cutting fluid of the cutting fluid apparatus includes a C1-C20 alcohol, a C1-C20 ketone, a C1-C20 acetate compound, acetic acid, oleic acid, carboxylic acid, a source of A, silicic acid, or a combination thereof.Type: GrantFiled: September 20, 2016Date of Patent: April 10, 2018Assignee: General Electric CompanyInventors: Digamber Gurudas Porob, James Edward Murphy, Florencio Garcia, Srinivas Prasad Sista, Anant Achyut Setlur, William Winder Beers, Fangming Du
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Patent number: 9929319Abstract: A process for fabricating a LED lighting apparatus includes disposing a composite coating on a surface of a LED chip. The composite coating comprises a first composite layer having a manganese doped phosphor of formula I and a first binder, and a second composite layer comprising a second phosphor composition and a second binder. The first binder, the second binder or both include a poly(meth)acrylate. Ax[MFy]:Mn4+??(I) wherein A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Hf, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; y is 5, 6 or 7.Type: GrantFiled: June 13, 2014Date of Patent: March 27, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Anant Achyut Setlur, Stanton Earl Weaver, Thomas Bert Gorczyca, Ashfaqul Islam Chowdhury, James Edward Murphy, Florencio Garcia
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Publication number: 20180079955Abstract: Methods for fabricating coated semiconductor elements are presented. The methods include the steps of combining a phosphor of formula I and a polymer binder to form a composite material, providing a semiconductor wafer including IniGajAlkN, wherein 0?i; 0?j; 0?k, and a sum of i, j and k is equal to 1, coating the composite material on a surface of the semiconductor wafer to form a coated semiconductor wafer, and dicing the coated semiconductor wafer using a cutting fluid apparatus to form one or more coated semiconductor elements. A cutting fluid of the cutting fluid apparatus includes a C1-C20 alcohol, a C1-C20 ketone, a C1-C20 acetate compound, acetic acid, oleic acid, carboxylic acid, a source of A, silicic acid, or a combination thereof.Type: ApplicationFiled: September 20, 2016Publication date: March 22, 2018Inventors: Digamber Gurudas Porob, James Edward Murphy, Florencio Garcia, Srinivas Prasad Sista, Anant Achyut Setlur, William Winder Beers, Fangming Du
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Publication number: 20180040782Abstract: A lighting apparatus includes an LED light source radiationally coupled to a composite material including a phosphor of formula I and a thermally conductive material dispersed in at least a portion of a binder material. The thermally conductive material includes a material selected from the group consisting of indium oxide, tin oxide, indium tin oxide, calcium oxide, barium oxide, strontium oxide, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, strontium hydroxide, zinc hydroxide, aluminum phosphate, magnesium phosphate, calcium phosphate, barium phosphate, strontium phosphate, diamond, graphene, polyethylene nanofibers, carbon nanotubes, silver metal nanoparticles, copper metal nanoparticles, gold metal nanoparticles, aluminum metal nanoparticles, boron nitride, silicon nitride, an alkali metal halide, calcium fluoride, magnesium fluoride, a compound of formula II, and combinations thereof.Type: ApplicationFiled: August 8, 2016Publication date: February 8, 2018Inventors: Digamber Gurudas Porob, James Edward Murphy, Florencio Garcia, Megan Marie Brewster
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Patent number: 9698314Abstract: A process for synthesizing a color stable Mn4+ doped phosphor includes contacting a precursor of formula I, in gaseous form at an elevated temperature with a fluorine-containing oxidizing agent to form the color stable Mn4+ doped phosphor Ax[MFy]:Mn4+??I wherein A is Li, Na, K, Rb, Cs, NR4 or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Hf, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; R is H, lower alkyl, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; and y is 5, 6 or 7.Type: GrantFiled: March 13, 2014Date of Patent: July 4, 2017Assignee: General Electric CompanyInventors: James Edward Murphy, Anant Achyut Setlur, Florencio Garcia, Robert Joseph Lyons, Ashfaqul Islam Chowdhury, Nagaveni Karkada, Prasanth Kumar Nammalwar
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Publication number: 20170145304Abstract: A lighting apparatus includes a semiconductor light source in direct contact with a polymer composite comprising a color stable Mn4+ doped phosphor, wherein the lighting apparatus has a color shift of 1.5 MacAdam ellipses after operating for at least 2,000 hour at a LED current density greater than 2 A/cm2, a LED wall-plug efficiency greater than 40%, and a board temperature greater than 25° C.Type: ApplicationFiled: January 10, 2017Publication date: May 25, 2017Inventors: James Edward Murphy, Anant Achyut Setlur, Florencio Garcia, Robert Joseph Lyons, Ashfaqul Islam Chowdhury, Nagaveni Karkada, Prasanth Kumar Nammalwar, William Winder Beers
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Patent number: 9580648Abstract: A color stable Mn4+ doped phosphor of formula I, Ax[MFy]:Mn4+??I wherein A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Hf, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; y is 5, 6 or 7; and wherein % intensity loss of the phosphor after exposure to light flux of at least 80 w/cm2 at a temperature of at least 50° C. for at least 21 hours is ?4%.Type: GrantFiled: May 23, 2014Date of Patent: February 28, 2017Assignee: General Electric CompanyInventors: James Edward Murphy, Anant Achyut Setlur, Florencio Garcia, Robert Joseph Lyons, Ashfaqul Islam Chowdhury, Nagaveni Karkada, Prasanth Kumar Nammalwar
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Patent number: 9567516Abstract: A process for synthesizing a manganese (Mn4+) doped phosphor includes milling particles of the a phosphor precursor of formula I, and contacting the milled particles with a fluorine-containing oxidizing agent at an elevated temperature Ax[MFy]:Mn4+??(I) wherein A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Hf, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; y is 5, 6 or 7.Type: GrantFiled: June 12, 2014Date of Patent: February 14, 2017Assignee: General Electric CompanyInventors: James Edward Murphy, Anant Achyut Setlur, Florencio Garcia, Srinivas Prasad Sista
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Publication number: 20160376499Abstract: A phosphor composition is derived from combining K2SiF6:Mn4+ in solid form with a saturated solution of a manganese-free complex fluoride including a composition of formula I:A3[MF6], where A is selected from Na, K, Rb, and combinations thereof and M is selected from Al, Ga, In, Sc, Y, Gd, and combinations thereof. The composition of formula I:A3[MF6] has a water solubility lower than a water solubility of K2SiF6. A lighting apparatus including the phosphor composition is also provided.Type: ApplicationFiled: December 16, 2014Publication date: December 29, 2016Inventors: Anant Achyut Setlur, Robert Joseph Lyons, Prasanth Kumar Nammalwar, James Edward Murphy, Florencio Garcia, Ravikumar Hanumantha
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Patent number: 9385282Abstract: A process for synthesizing a Mn4+ doped phosphor includes contacting a precursor of formula I, Ax(M1?z,Mnz)Fy??I at an elevated temperature with a fluorine-containing oxidizing agent in gaseous form to form the Mn4+ doped phosphor; wherein A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Hf, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; y is 5, 6 or 7; and 0.03?z?0.10.Type: GrantFiled: June 12, 2014Date of Patent: July 5, 2016Assignee: General Electric CompanyInventors: Anant Achyut Setlur, James Edward Murphy, Florencio Garcia, Ashfaqul Islam Chowdhury, Srinivas Prasad Sista