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: 9376615Abstract: A process for synthesizing a Mn4+ doped phosphor includes contacting a precursor of formula I, at an elevated temperature with a fluorine-containing oxidizing agent in gaseous form to form the color stable 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 amount of Mn ranges from about 0.9 wt % to about 4 wt %, based on total weight.Type: GrantFiled: November 21, 2014Date of Patent: June 28, 2016Assignee: General Electric CompanyInventors: James Edward Murphy, Florencio Garcia, Ashfaqul Islam Chowdhury, Srinivas Prasad Sista, Anant Achyut Setlur
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Patent number: 9371481Abstract: A process for synthesizing a Mn4+ doped phosphor includes contacting a precursor of formula I, Ax[MFy]:Mn4+?? I at any temperature in a range from about 200° C. to about 700° C. with a fluorine-containing oxidizing agent in gaseous form; maintaining the temperature during a contact period of at least one hour; and, after the contact period, reducing the temperature at a rate of ?5° C. per minute; 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: June 21, 2016Assignee: General Electric CompanyInventors: Florencio Garcia, Anant Achyut Setlur, James Edward Murphy, Srinivas Prasad Sista
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Publication number: 20160093776Abstract: 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: ApplicationFiled: December 8, 2015Publication date: March 31, 2016Inventors: Anant Achyut Setlur, James Edward Murphy, Florencio Garcia, Srinivas Prasad Sista
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Publication number: 20150361337Abstract: A process for synthesizing a Mn4+ doped phosphor includes contacting a precursor of formula I, at an elevated temperature with a fluorine-containing oxidizing agent in gaseous form to form the color stable 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 amount of Mn ranges from about 0.9 wt % to about 4 wt %, based on total weight.Type: ApplicationFiled: November 21, 2014Publication date: December 17, 2015Inventors: James Edward Murphy, Florencio Garcia, Ashfaqul Islam Chowdhury, Srinivas Prasad Sista, Anant Achyut Setlur
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Publication number: 20150361336Abstract: A process for synthesizing a Mn4+ doped phosphor includes contacting a precursor of formula I, Ax[MFy]:Mn4+??I at any temperature in a range from about 200° C. to about 700° C. with a fluorine-containing oxidizing agent in gaseous form; maintaining the temperature during a contact period of at least one hour; and, after the contact period, reducing the temperature at a rate of ?5° C. per minute; 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: ApplicationFiled: June 12, 2014Publication date: December 17, 2015Inventors: Florencio Garcia, Anant Achyut Setlur, James Edward Murphy, Srinivas Prasad Sista
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Publication number: 20150364655Abstract: 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: ApplicationFiled: June 12, 2014Publication date: December 17, 2015Inventors: Anant Achyut Setlur, James Edward Murphy, Florencio Garcia, Ashfaqul Islam Chowdhury, Srinivas Prasad Sista
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Publication number: 20150361335Abstract: 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: ApplicationFiled: June 12, 2014Publication date: December 17, 2015Inventors: James Edward Murphy, Anant Achyut Setlur, Florencio Garcia, Srinivas Prasad Sista
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Publication number: 20150364659Abstract: 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: ApplicationFiled: June 13, 2014Publication date: December 17, 2015Inventors: Anant Achyut Setlur, Stanton Earl Weaver, Thomas Bert Gorczyca, Ashfaqul Islam Chowdhury, James Edward Murphy, Florencio Garcia
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Publication number: 20150123153Abstract: A process for fabricating an LED lighting apparatus comprising a color stable Mn4+ doped phosphor of formula I includes forming on a surface of an LED chip a polymer composite layer comprising a first and a second population of particles of the phosphor of formula I having a graded composition varying in manganese concentration across a thickness thereof; Ax(M,Mn)Fy??(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. The first population of particles has a lower manganese concentration than the second population of particles, and the manganese concentration in the polymer composite layer ranges from a minimum value in a region of the polymer composite layer proximate to the LED chip to a maximum value in a region opposite to the LED chip.Type: ApplicationFiled: November 6, 2013Publication date: May 7, 2015Applicant: GENERAL ELECTRIC COMPANYInventors: Anant Achyut Setlur, James Edward Murphy, Florencio Garcia
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Patent number: 8906724Abstract: 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, 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; and y is 5, 6 or 7.Type: GrantFiled: June 23, 2014Date of Patent: December 9, 2014Assignee: 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: 20140327026Abstract: 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+ 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; and y is 5, 6 or 7.Type: ApplicationFiled: June 23, 2014Publication date: November 6, 2014Inventors: 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: 20140264418Abstract: 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: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: 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: 20140268655Abstract: 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: ApplicationFiled: May 23, 2014Publication date: September 18, 2014Applicant: 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: 8663501Abstract: Cerium, gadolinium and terbium doped aluminum phosphates of formula I may be used in fluorescent lamps Al1-x-y-z-a-b-c-d-eTbxCeyGdzLuaScbIncLadGaePO4??I wherein x is greater than or equal to about 0.001 and less than or equal to about 0.3; y is greater than or equal to about 0.001 and less than or equal to about 0.3; z is greater than or equal to about 0.01 and less than or equal to about 0.3; a is greater than or equal to about 0.01 and less than or equal to about 0.1; b is greater than or equal to about 0.01 and less than or equal to about 0.1; c is greater than or equal to about 0.01 and less than or equal to about 0.1. d is greater than or equal to about 0.01 and less than or equal to about 0.1; and e is greater than or equal to about 0.01 and less than or equal to about 0.1.Type: GrantFiled: June 29, 2011Date of Patent: March 4, 2014Assignee: General Electric CompanyInventors: Alok Mani Srivastava, Holly Ann Comanzo, Gopi Chandran Ramachandran, Samuel Joseph Camardello, Swarnagowri Addepalli, Florencio Garcia
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Publication number: 20130082207Abstract: In accordance with one aspect of the present invention, a core?shell phosphor composition is provided that includes a core comprising magnesium oxide; and a shell at least partially enclosing the core, wherein the shell comprises a shell material having formula (I) (Y1?xEux)2O3 ??(I) wherein, 0<x<0.95. In accordance to another aspect of the invention a method of making the core?shell phosphor and a light source including the core?shell phosphor are provided.Type: ApplicationFiled: September 29, 2011Publication date: April 4, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Alok Mani Srivastava, Holly Ann Comanzo, Samuel Joseph Camardello, Florencio Garcia
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Publication number: 20130002123Abstract: Cerium, gadolinium and terbium doped aluminum phosphates of formula I may be used in fluorescent lamps Al1-x-y-z-a-b-c-d-eTbxCeyGdzLuaScbIncLadGaePO4??I wherein x is greater than or equal to about 0.001 and less than or equal to about 0.3; y is greater than or equal to about 0.001 and less than or equal to about 0.3; z is greater than or equal to about 0.01 and less than or equal to about 0.3; a is greater than or equal to about 0.01 and less than or equal to about 0.1; b is greater than or equal to about 0.01 and less than or equal to about 0.1; c is greater than or equal to about 0.01 and less than or equal to about 0.1. d is greater than or equal to about 0.01 and less than or equal to about 0.1; and e is greater than or equal to about 0.01 and less than or equal to about 0.1.Type: ApplicationFiled: June 29, 2011Publication date: January 3, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Alok Mani Srivastava, Holly Ann Comanzo, Gopi Chandran Ramachandran, Samuel Joseph Camardello, Swarnagowri Addepalli, Florencio Garcia
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Publication number: 20130001471Abstract: In accordance with one aspect of the present invention, a core-shell phosphor composition is provided that includes a core comprising at least one material selected from the group consisting of aluminum phosphate, gallium phosphate, calcium phosphate, magnesium phosphate, zinc phosphate and boron phosphate; and a shell at least partially enclosing the core, wherein the shell comprises a shell material having formula (I) La1-x-yCexTbyPO4 ??(I) wherein, 0<x<0.95, and 0<y<0.5. In accordance to another aspect of the invention a method of making the core-shell phosphor and a light source including the core-shell phosphor are provided.Type: ApplicationFiled: June 28, 2011Publication date: January 3, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Alok Mani Srivastava, Holly Ann Comanzo, Samuel Joseph Camardello, Florencio Garcia