Patents by Inventor Kamjula P. Reddy
Kamjula P. Reddy 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: 8148179Abstract: A hermetically sealed glass package and method for manufacturing the hermetically sealed glass package are described herein using an OLED display as an example. In one embodiment, the hermetically sealed glass package is manufactured by providing a first substrate plate and a second substrate plate. The second substrate contains at least one transition or rare earth metal such as iron, copper, vanadium, manganese, cobalt, nickel, chromium, neodymium and/or cerium. A sensitive thin-film device that needs protection is deposited onto the first substrate plate. A laser is then used to heat the doped second substrate plate in a manner that causes a portion of it to swell and form a hermetic seal that connects the first substrate plate to the second substrate plate and also protects the thin film device.Type: GrantFiled: March 17, 2010Date of Patent: April 3, 2012Assignee: Corning IncorporatedInventors: Bruce G. Aitken, Paul S. Danielson, James E. Dickinson, Jr., Stephan L. Logunov, Robert Morena, Mark L. Powley, Kamjula P. Reddy, Joseph F. Schroeder, III, Alexander Streltsov
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Publication number: 20100186449Abstract: A hermetically sealed glass package and method for manufacturing the hermetically sealed glass package are described herein using an OLED display as an example. In one embodiment, the hermetically sealed glass package is manufactured by providing a first substrate plate and a second substrate plate. The second substrate contains at least one transition or rare earth metal such as iron, copper, vanadium, manganese, cobalt, nickel, chromium, neodymium and/or cerium. A sensitive thin-film device that needs protection is deposited onto the first substrate plate. A laser is then used to heat the doped second substrate plate in a manner that causes a portion of it to swell and form a hermetic seal that connects the first substrate plate to the second substrate plate and also protects the thin film device.Type: ApplicationFiled: March 17, 2010Publication date: July 29, 2010Inventors: Bruce G. Aitken, Paul S. Danielson, James E. Dickinson, JR., Stephan L. Longunov, Robert Morena, Mark L. Powley, Kamjula P. Reddy, Joseph F. Schroeder, III, Alexander Streltsov
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Publication number: 20080182062Abstract: A hermetically sealed glass package and method for manufacturing the hermetically sealed glass package are described herein. In one embodiment, the hermetically sealed glass package is suitable to protect thin film devices which are sensitive to the ambient environment. Some examples of such glass packages are organic emitting light diode (OLED) displays, sensors, and other optical devices. The present invention is demonstrated using an OLED display as an example.Type: ApplicationFiled: March 31, 2008Publication date: July 31, 2008Inventors: Keith J. Becken, Stephan L. Logunov, Kamjula P. Reddy, Joseph F. Schroeder, Holly J. Strzepek
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Patent number: 7371143Abstract: A hermetically sealed glass package and method for manufacturing the hermetically sealed glass package are described herein. In one embodiment, the hermetically sealed glass package is suitable to protect thin film devices which are sensitive to the ambient environment. Some examples of such glass packages are organic emitting light diode (OLED) displays, sensors, and other optical devices. The present invention is demonstrated using an OLED display as an example.Type: GrantFiled: October 20, 2004Date of Patent: May 13, 2008Assignee: Corning IncorporatedInventors: Keith J. Becken, Stephan L. Logunov, Kamjula P. Reddy, Joseph F. Schroeder, III, Holly J. Strzepek
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Publication number: 20040206953Abstract: A hermetically sealed glass package and method for manufacturing the hermetically sealed glass package are described herein using an OLED display as an example. In one embodiment, the hermetically sealed glass package is manufactured by providing a first substrate plate and a second substrate plate. The second substrate contains at least one transition metal such as iron, copper, vanadium, manganese, cobalt, nickel, chromium, and/or neodymium. A sensitive thin-film device that needs protection is deposited onto the first substrate plate. A laser is then used to heat the doped second substrate plate in a manner that causes a portion of it to swell and form a hermetic seal that connects the first substrate plate to the second substrate plate and also protects the thin film device.Type: ApplicationFiled: April 16, 2003Publication date: October 21, 2004Inventors: Robert Morena, Mark L. Powley, Kamjula P. Reddy, Joseph F. Schroeder, Alexander Streltsov
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Patent number: 6737375Abstract: Glass frit compositions, calculated in mole percent on an oxide basis, consisting essentially of 24.5 to 29.0% P2O5; 1.0 to 5.0% B2O3; 1.0 to 2.0% Al2O3; and sufficient amounts of SnO and ZnO (51.5 to 66.5% SnO, and 5.0-12.0% ZnO), wherein the molar ratio of SnO:ZnO is in the range of about 5.0:1 to 12:1, and 0.0 to 2.0% SiO2. The glass compositions exhibit, under NMR spectroscopic analysis of 11B nuclei, a signal containing at least two peaks at a chemical shift in the range of approximately −18 to −25 ppm. The frit compositions exhibit long term stability, durability, and resistance to attack against moisture in high temperature and humidity conditions and are capable of attaching optical fiber Bragg gratings without the use of a hermetic chamber and the like. An optoelectronic device that employs a sealing material that comprises a frit made from the glass compositions.Type: GrantFiled: March 16, 2001Date of Patent: May 18, 2004Assignee: Corning IncorporatedInventors: Carol L. Buhrmaster, Robert Morena, Kamjula P. Reddy, Randall E. Youngman
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Patent number: 6656599Abstract: A metal article, in particular a component for a thermal cracking furnace, and a method of protecting the metal from exposure to carbon, the article having a protective coating that has a glass-ceramic surface and an interior having a CTE between that of the glass-ceramic and the metal.Type: GrantFiled: March 8, 2001Date of Patent: December 2, 2003Assignee: Corning IncorporatedInventors: David G. Grossman, Kamjula P. Reddy, Michael H. Wasilewski
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Publication number: 20020176644Abstract: The invention relates to a polarization combiner/splitter. The polarization combiner/splitter includes a first ferrule, a first optical fiber assembly coupled to the first ferrule and a second optical fiber assembly coupled to the first ferrule. The polarization combiner/splitter also includes a walk-off crystal coupled to the first ferrule. A second ferrule is coupled to the walk-off crystal; and a third optical fiber assembly coupled to the second ferrule. The first optical fiber assembly includes a first fiber GRIN lens coupled to a first polarization mode maintaining optical waveguide fiber. The second optical fiber assembly includes a second fiber GRIN lens coupled to a second polarization mode maintaining optical waveguide fiber. The third optical fiber assembly includes a third fiber GRIN lens and a first single mode optical waveguide fiber.Type: ApplicationFiled: March 14, 2002Publication date: November 28, 2002Inventors: Venkata A. Bhagavatula, John Himmelreich, Gaeyoun Kim, Kamjula P. Reddy, Gregory E. Williams, Bryan J. Wolfe
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Patent number: 6477299Abstract: The invention includes environmentally stable athermalized optical fiber gratings and methods of making such stabilized optical waveguide fiber grating. Stable humidity-resistant athermalized fiber Bragg gratings are provided by stabilizing a negative thermal expansion substrate and utilizing a durable frit to attach the fiber Bragg grating to the substrate.Type: GrantFiled: March 20, 2000Date of Patent: November 5, 2002Assignee: Corning IncorporatedInventors: George H. Beall, Joel P. Carberry, Kenneth Chyung, Joseph E. Pierson, Kamjula P. Reddy, James E. Webb
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Publication number: 20020128141Abstract: Glass frit compositions, calculated in mole percent on an oxide basis, consisting essentially of 24.5 to 29.0% P2O5; 1.0 to 5.0% B2O3; 1.0 to 2.0% Al2O3; and sufficient amounts of SnO and ZnO (51.5 to 66.5% SnO, and 5.0-12.0% ZnO), wherein the molar ratio of SnO:ZnO is in the range of about 5.0:1 to 12:1, and 0.0 to 2.0% SiO2. The glass compositions exhibit, under NMR spectroscopic analysis of 11B nuclei, a signal containing at least two peaks at a chemical shift in the range of approximately −18 to −25 ppm. The frit compositions exhibit long term stability, durability, and resistance to attack against moisture in high temperature and humidity conditions and are capable of attaching optical fiber Bragg gratings without the use of a hermetic chamber and the like. An optoelectronic device that employs a sealing material that comprises a frit made from the glass compositions.Type: ApplicationFiled: March 16, 2001Publication date: September 12, 2002Inventors: Carol L. Buhrmaster, Robert Morena, Kamjula P. Reddy, Randall E. Youngman
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Publication number: 20020119884Abstract: Glass frit compositions, calculated in mole percent on an oxide basis, consisting essentially of 24.5 to 29.0% P2O5; 1.0 to 5.0% B2O3; 1.0 to 2.0% Al2O3; and sufficient amounts of SnO and ZnO (51.5 to 66.5% SnO, and 5.0-12.0% ZnO), wherein the molar ratio of SnO:ZnO is in the range of about 5.0:1 to 12: 1, and 0.0 to 2.0% SiO2. The glass compositions exhibit, under NMR spectroscopic analysis of 11B nuclei, a signal containing at least two peaks at a chemical shift in the range of approximately −18 to −25 ppm. The frit compositions exhibit long term stability, durability, and resistance to attack against moisture in high temperature and humidity conditions and are capable of attaching optical fiber Bragg gratings without the use of a hermetic chamber and the like. An optoelectronic device that employs a sealing material that comprises a frit made from the glass compositions.Type: ApplicationFiled: December 21, 2000Publication date: August 29, 2002Inventors: Carol L. Buhrmaster, Robert Morena, Kamjula P. Reddy, Randall E. Youngman
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Patent number: 6362118Abstract: The invention includes methods of stabilizing negative thermal expansion glass-ceramic optical waveguide substrates. The invention includes the stabilized negative thermal expansion glass-ceramic optical waveguide substrates. The stabilized substrates have very stable physical characteristics such as dimensional length when exposed to extreme environments. The stabilized substrates are used to athermalize optical waveguide devices such as optical fiber grating. The stabilized substrates are particularly well suited for providing athermalized fiber Bragg grating.Type: GrantFiled: April 20, 2000Date of Patent: March 26, 2002Assignee: Corning IncorporatedInventors: George H. Beall, Joel P. Carberry, Kenneth Chyung, Joseph E. Pierson, Kamjula P. Reddy, James E. Webb
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Publication number: 20020034648Abstract: A metal article, in particular a component for a thermal cracking furnace, and a method of protecting the metal from exposure to carbon, the article having a protective coating that has a glass-ceramic surface and an interior having a CTE between that of the glass-ceramic and the metal.Type: ApplicationFiled: March 8, 2001Publication date: March 21, 2002Inventors: David G. Grossman, Kamjula P. Reddy, Michael H. Wasilewski
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Patent number: 6228469Abstract: A metal article, in particular a component for a thermal cracking furnace, and a method of protecting the metal from exposure to carbon, the article having a protective coating that has a glass-ceramic surface and an interior having a CTE between that of the glass-ceramic and the metal.Type: GrantFiled: September 7, 1999Date of Patent: May 8, 2001Assignee: Corning IncorporatedInventors: David G. Grossman, Kamjula P. Reddy, Michael H. Wasilewski