Patents Assigned to Lightscape Materials, Inc.
-
Patent number: 9315725Abstract: A method of manufacturing an Eu2+ activated inorganic red phosphor is provided, wherein the phosphor exhibits an emission spectrum resolvable into a first Gaussian emission curve and a second Gaussian emission curve; wherein the first Gaussian emission curve has a first Gaussian emission curve peak, P1; wherein the first Gaussian emission curve peak, P1, has a peak 1 height, HP1, a peak 1 peak wavelength, P?P1, and a peak 1 area, AP1; wherein the second Gaussian emission curve has a second Gaussian emission curve peak, P2; wherein the second Gaussian emission curve peak, P2, has a peak 2 height, HP2, a peak 2 peak wavelength, P?P2, a peak 2 full width at half max, FWHMP2, and a peak 2 area, AP2; wherein P?P1<P?P2; and, wherein the peak 2 full width at half max, FWHMP2, is minimized.Type: GrantFiled: August 28, 2014Date of Patent: April 19, 2016Assignees: Lightscape Materials, Inc., Dow Global Technologies LLCInventors: Michael Dennis Romanelli, Alan C. Thomas, Mary Anne Leugers, Yongchi Tian
-
Patent number: 9217105Abstract: A family of oxycarbonitride phosphor compositions is provided. Also provided are light emitting devices incorporating the oxycarbonitride phosphor compositions.Type: GrantFiled: May 16, 2014Date of Patent: December 22, 2015Assignee: Lightscape Materials, Inc.Inventors: Yuanqiang Li, Michael D. Romanelli, Yongchi Tian
-
Patent number: 9200198Abstract: A phosphor is provided, comprising an inorganic luminescent compound represented by formula (1) having an emission spectrum resolvable into a first Gaussian emission curve and a second Gaussian emission curve; wherein the first Gaussian emission curve has a first Gaussian emission curve peak, P1; wherein the first Gaussian emission curve peak, P1, has a peak 1 height, HP1, a peak 1 peak wavelength, P?P1, and a peak 1 area, AP1; wherein the second Gaussian emission curve has a second Gaussian emission curve peak, P2; wherein the second Gaussian emission curve peak, P2 has a peak 2 height, HP2, a peak 2 peak wavelength, P?P2, a peak 2 full width at half max, FWHMP2, and a peak 2 area, AP2; wherein P?P1<P?P2; and, wherein, at least one of, the peak 2 height, HP2, the peak 2 full width at half max, FWHMP2, and, the peak 2 area, AP2, is minimized.Type: GrantFiled: August 28, 2014Date of Patent: December 1, 2015Assignees: Lightscape Materials, Inc., Dow Global Technologies LLCInventors: Michael Dennis Romanelli, Mary Anne Leugers, Alan C. Thomas, Yongchi Tian
-
Patent number: 9200199Abstract: A red phosphor is provided, comprising an inorganic luminescent compound represented by formula (1) having an emission spectrum resolvable into a first Gaussian emission curve and a second Gaussian emission curve; wherein the first Gaussian emission curve has a first Gaussian emission curve peak, P1; wherein the first Gaussian emission curve peak, P1, has a peak 1 height, HP1, a peak 1 peak wavelength, P?P1, and a peak 1 area, AP1; wherein the second Gaussian emission curve has a second Gaussian emission curve peak, P2; wherein the second Gaussian emission curve peak, P2, has a peak 2 height, HP2, a peak 2 peak wavelength, P?P2, a peak 2 full width at half max, FWHMP2, and a peak 2 area, AP2; wherein P?P1<P?P2; and, wherein the peak 2 full width at half max, FWHMP2, is minimized.Type: GrantFiled: August 28, 2014Date of Patent: December 1, 2015Assignees: Lightscape Materials, Inc., Dow Global Technologies LLCInventors: Michael Dennis Romanelli, Alan C. Thomas, Mary Anne Leugers, Yongchi Tian
-
Patent number: 9017574Abstract: A red phosphor is provided. Also provided is a lighting apparatus containing a red phosphor.Type: GrantFiled: July 25, 2012Date of Patent: April 28, 2015Assignee: Lightscape Materials, Inc.Inventors: Yuanqiang Li, Michael Dennis Romanelli, Yongchi Tian
-
Patent number: 8906262Abstract: The present invention relates to certain metal silicate halide (halosilicate) phosphors, the phosphors with an oxide coating, methods of making the phosphors, and light emitting diode- (LED-) based lighting devices modified with the phosphors.Type: GrantFiled: September 27, 2006Date of Patent: December 9, 2014Assignee: Lightscape Materials, Inc.Inventors: Yongchi Tian, Perry Niel Yocom, Sawsan Aziz, Olga Zakharov, Alison Sides
-
Patent number: 8815121Abstract: A red phosphor is provided. Also provided is a lighting apparatus containing a red phosphor.Type: GrantFiled: August 31, 2012Date of Patent: August 26, 2014Assignee: Lightscape Materials, Inc.Inventors: Yuan Qiang Li, Michael D. Romanelli, Yongchi Tian
-
Patent number: 8801969Abstract: Disclosed herein is a novel group of carbonitride and carbidonitride phosphors and light emitting devices which utilize these phosphors. In certain embodiments, the inventive phosphors are expressed as follows: Cam/2Si12-(m+n)?xCxAlm+nN16-nOnEu2+??(1) M(II)m/2Si12-(m+n)?xCxM(III)m+nN16-nOn-y/2Hy:A??(2) Mm/vSi12-(m+n)?xCxM(III)m+nN16-nOn-y/2Hy:A??(3) Cam/2Si12-(m+n)+xAlm+n?xN16-n?xCxOn:Eu2+??(4) M(II)m/2Si12-(m+n)+xM(III)m+n?xN16-n?xCxOn-y/2Hy:A??(5) Mm/vSi12-(m+n)+xM(III)m+n?xN16-n?xCxOn-y/2Hy:A??(6) wherein v is the valence number of M, 0?m<5, 0?n?3, 0?x<4, and 0?y<1, M is at least one cation, M(II) is at least one divalent cation, M(III) is at least one trivalent cation, H is at least one monovalent anion, and A is a luminescence activator.Type: GrantFiled: January 13, 2012Date of Patent: August 12, 2014Assignee: Lightscape Materials, Inc.Inventors: Alan Thomas, Yuanqiang Li, Yongchi Tian
-
Patent number: 8771547Abstract: Disclosed herein is a novel family of oxycarbonitride phosphor compositions and light emitting devices incorporating the same. Within the sextant system of M—Al—Si—O—N—C—Ln and quintuplet system of M—Si—O—N—C—Ln (M=alkaline earth element, Ln=rare earth element), the phosphors are composed of either one single crystalline phase or two crystalline phases with high chemical and thermal stability. In certain embodiments, the disclosed phosphor of silicon oxycarbonitrides emits green light at wavelength between 530-550 nm. In further embodiments, the disclosed phosphor compositions emit blue-green to yellow light in a wavelength range of 450-650 nm under near-UV and blue light excitation.Type: GrantFiled: July 25, 2013Date of Patent: July 8, 2014Assignee: Lightscape Materials, Inc.Inventors: Yuanqiang Li, Michael Dennis Romanelli, Yongchi Tian
-
Publication number: 20140062288Abstract: A red phosphor is provided. Also provided is a lighting apparatus containing a red phosphor.Type: ApplicationFiled: August 31, 2012Publication date: March 6, 2014Applicant: LIGHTSCAPE MATERIALS, INC.Inventors: Yuan Qiang Li, Michael D. Romanelli, Yongchi Tian
-
Publication number: 20140062287Abstract: A red phosphor is provided. Also provided is a lighting apparatus containing a red phosphor.Type: ApplicationFiled: August 29, 2012Publication date: March 6, 2014Applicant: LIGHTSCAPE MATERIALS, INC.Inventors: Yuan Qiang Li, Michael D. Romanelli, Yongchi Tian
-
Patent number: 8551361Abstract: Disclosed herein is a novel family of oxycarbidonitride phosphor compositions and light emitting devices incorporating the same. Within the sextant system of M—Al—Si—O—N—C—Ln and quintuplet system of M—Si—O—N—C—Ln (M=alkaline earth element, Ln=rare earth element), the phosphors are composed of either one single crystalline phase or two crystalline phases with high chemical and thermal stability. In certain embodiments, the disclosed phosphor of silicon oxycarbidonitrides emits green light at wavelength between 530-550 nm. In further embodiments, the disclosed phosphor compositions emit blue-green to yellow light in a wavelength range of 450-650 nm under near-UV and blue light excitation.Type: GrantFiled: March 11, 2011Date of Patent: October 8, 2013Assignee: Lightscape Materials, Inc.Inventors: Yuanqiang Li, Michael Dennis Romanelli, Yongchi Tian
-
Patent number: 8536777Abstract: A red phosphor is provided. Also provided is a lighting apparatus containing a red phosphor.Type: GrantFiled: August 29, 2012Date of Patent: September 17, 2013Assignee: Lightscape Materials, Inc.Inventors: Yuan Qiang Li, Michael D. Romanelli, Yongchi Tian
-
Patent number: 8535566Abstract: Disclosed herein are novel families of silicon carbidonitride phosphor compositions. In certain embodiments, optimal ranges of carbon content have been identified which provide excellent luminescence and thermal stability characteristics.Type: GrantFiled: June 20, 2011Date of Patent: September 17, 2013Assignee: Lightscape Materials, Inc.Inventors: Yuanqiang Li, Michael Dennis Romanelli, Yongchi Tian
-
Patent number: 8512599Abstract: Disclosed herein is a novel group of carbidonitride phosphors and light emitting devices which utilize these phosphors. In certain embodiments, the present invention is directed to a novel family of carbidonitride-based phosphors expressed as follows: Ca1?xAlx?xySi1?x+xyN2?x?xyCxy:A;??(1) Ca1?x?zNazM(III)x?xy?zSi1?x+xy+zN2?x?xyCxy:A;??(2) M(II)1?x?zM(I)zM(III)x?xy?zSi1?x+xy+zN2?x?xyCxy:A;??(3) M(II)1?x?zM(I)zM(III)x?xy?zSi1?x+xy+zN2?x?xy?2w/3CxyOw?v/2Hv:A; and??(4) M(II)1?x?zM(I)zM(III)x?xy?zSi1?x+xy+zN2?x?xy?2w/3?v/3CxyOwHv:A,??(4a) wherein 0<x<1, 0<y<1, 0?z<1, 0?v<1, 0<w<1, x+z<1, x>xy+z, and 0<x?xy?z<1, M(II) is at least one divalent cation, M(I) is at least one monovalent cation, M(III) is at least one trivalent cation, H is at least one monovalent anion, and A is a luminescence activator doped in the crystal structure.Type: GrantFiled: July 19, 2010Date of Patent: August 20, 2013Assignee: Lightscape Materials, Inc.Inventors: Yuanqiang Li, Yongchi Tian, Michael Dennis Romanelli
-
Publication number: 20130207536Abstract: A red phosphor is provided. Also provided is a lighting apparatus containing a red phosphor.Type: ApplicationFiled: July 25, 2012Publication date: August 15, 2013Applicant: LIGHTSCAPE MATERIALS, INC.Inventors: Yuanqiang Li, Michael Dennis Romanelli, Yongchi Tian
-
Publication number: 20130207537Abstract: A red phosphor is provided. Also provided is a lighting apparatus containing a red phosphor.Type: ApplicationFiled: August 29, 2012Publication date: August 15, 2013Applicant: LIGHTSCAPE MATERIALS, INC.Inventors: Yuan Qiang Li, Michael D. Romanelli, Yongchi Tian
-
Publication number: 20120212122Abstract: Disclosed herein is a novel group of carbonitride and carbidonitride phosphors and light emitting devices which utilize these phosphors. In certain embodiments, the inventive phosphors are expressed as follows: Cam/2Si12-(m+n)?xCxAlm+nN16-nOn:EU2+??(1) M(II)m/2Si12-(m+n)?xCxM(III)m+nN16-nOn-y/2Hy:A??(2) Mm/vSi12-(m+n)?xCxM(III)m+nN16-nOn-y/2Hy:A??(3) Cam/2Si12-(m+n)+xAlm+n?xN16-n?xCxOn:Eu2+??(4) M(II)m/2Si12-(m+n)+xM(III)m+n?xN16-n?xCxOn-y/2Hy:A??(5) Mm/vSi12-(m+n)+xM(III)m+n?xN16-n?xCxOn-y/2Hy:A??(6) wherein v is the valence number of M, 0?m<5, 0?n?3, 0?x<4, and 0?y<1, M is at least one cation, M(II) is at least one divalent cation, M(III) is at least one trivalent cation, H is at least one monovalent anion, and A is a luminescence activator.Type: ApplicationFiled: January 13, 2012Publication date: August 23, 2012Applicant: LIGHTSCAPE MATERIALS, INC.Inventors: Alan Thomas, Yuanqiang Li, Yongchi Tian
-
Patent number: 8242525Abstract: Disclosed herein is a group of phosphors of the formula M2(SiO4)1-x-y-z(TiO4)x(ZrO4)y(HfO4)z:A,S and light emitting devices which utilize these phosphors.Type: GrantFiled: May 20, 2009Date of Patent: August 14, 2012Assignee: Lightscape Materials, Inc.Inventors: Yongchi Tian, Perry Niel Yocom, Olga Zakharov, Alison Sides, Alan C. Thomas
-
Publication number: 20120062105Abstract: Disclosed herein are novel families of silicon carbidonitride phosphor compositions. In certain embodiments, optimal ranges of carbon content have been identified which provide excellent luminescence and thermal stability characteristics.Type: ApplicationFiled: June 20, 2011Publication date: March 15, 2012Applicant: LIGHTSCAPE MATERIALS, INC.Inventors: Yuanqiang Li, Michael Dennis Romanelli, Yongchi Tian