Patents by Inventor Keith L. House
Keith L. House 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).
-
Patent number: 8007731Abstract: A device for treating fluids, such as automotive exhaust gases is provided, as well as a method of manufacturing such a device. The device provides a honeycomb structure, a matrix of ceramic walls that defines a plurality of parallel, fluid-conducting cells oriented along an axis, arranged in a stacked or discontinuous configuration between an inlet and outlet, where adjacent layers of honeycomb structure are separated by layers of air spaces. Each matrix layer has opposing faces that defines the inlets and outlets of the cells, and a peripheral portion or peripheral region including an outer skin. The peripheral portions or peripheral regions of adjacent stacked ceramic layers are mutually contiguous to prevent fluid flowing through the stacked ceramic layers from leaking between said outer skins.Type: GrantFiled: August 10, 2007Date of Patent: August 30, 2011Assignee: Corning IncorporatedInventors: George E. Berkey, Keith L. House
-
Patent number: 7524780Abstract: A method of forming an alkali metal oxide-doped optical fiber by diffusing an alkali metal into a surface of a glass article is disclosed. The silica glass article may be in the form of a tube or a rod, or a collection of tubes or rods. The silica glass article containing the alkali metal, and impurities that may have been unintentionally diffused into the glass article, is etched to a depth sufficient to remove the impurities. The silica glass article may be further processed to form a complete optical fiber preform. The preform, when drawn into an optical fiber, exhibits a low attenuation.Type: GrantFiled: January 28, 2005Date of Patent: April 28, 2009Assignee: Corning IncorporatedInventors: Laura J. Ball, Bruno P. M. Baney, Dana C. Bookbinder, Keith L. House, Rostislav R. Khrapko, Lisa A. Moore, Susan L. Schiefelbein
-
Publication number: 20090041635Abstract: A device for treating fluids, such as automotive exhaust gases is provided, as well as a method of manufacturing such a device. The invention provides a honeycomb structure, a matrix of ceramic walls that defines a plurality of parallel, fluid-conducting cells oriented along an axis, arranged in a stacked or discontinuous configuration between an inlet and outlet, where adjacent layers of honeycomb structure are separated by layers of air spaces. Each matrix layer has opposing faces that defines the inlets and outlets of the cells, and a peripheral portion or peripheral region including an outer skin. The peripheral portions or peripheral regions of adjacent stacked ceramic layers are mutually contiguous to prevent fluid flowing through the stacked ceramic layers from leaking between said outer skins.Type: ApplicationFiled: August 10, 2007Publication date: February 12, 2009Inventors: George E. Berkey, Keith L. House
-
Patent number: 7469559Abstract: A method of forming an alkali metal oxide-doped optical fiber by diffusing an alkali metal into a surface of a glass article is disclosed. The silica glass article may be in the form of a tube or a rod, or a collection of tubes or rods. The silica glass article containing the alkali metal, and impurities that may have been unintentionally diffused into the glass article, is etched to a depth sufficient to remove the impurities. The silica glass article may be further processed to form a complete optical fiber preform. The preform, when drawn into an optical fiber, exhibits a low attenuation.Type: GrantFiled: December 2, 2004Date of Patent: December 30, 2008Assignee: Corning IncorporatedInventors: Laura J Ball, Bruno P M Baney, Dana C Bookbinder, Keith L House, Rostislav R Khrapko, Susan L Schiefelbein, Lisa A Moore
-
Patent number: 6901775Abstract: A method and apparatus for providing a uniform coating thickness along an axial direction within an internal portion of a substrate tube is disclosed. A gas delivery unit is configured to coat the internal portion of the substrate tube. The gas delivery unit includes an insert. At least one of an inner diameter of the insert, a length of the insert, a gap between the insert and the substrate tube, and a flow of the gas mixture delivered to the substrate tube is configured to provide the uniform coating thickness along the axial direction.Type: GrantFiled: September 21, 2001Date of Patent: June 7, 2005Assignee: Corning IncorporatedInventors: Jean-Philippe J. de Sandro, Keith L. House, Joohyun Koh, Prantik Mazumder
-
Patent number: 6870999Abstract: An isotopically-altered, silica based optical fiber is provided having lower losses, broader bandwidth, and broader Raman gain spectrum characteristics than conventional silica-based fiber. A heavier, less naturally abundant isotope of silicon or oxygen is substituted for a lighter, more naturally abundant isotope to shift the infrared absorption to a slightly longer wavelength. In one embodiment, oxygen-18 is substituted for the much more naturally abundant oxygen-16 at least in the core region of the fiber. The resulting isotopically-altered fiber has a minimum loss of 0.044 dB/km less than conventional fiber, and a bandwidth that is 17 percent broader for a loss range between 0.044-0.034 dB/km. The fiber may be easily manufactured with conventional fiber manufacturing equipment by way of a plasma chemical vapor deposition technique. When a 50 percent substitution of oxygen -18 for oxygen-16 is made in the core region of the fiber, the Raman gain spectrum is substantially broadened.Type: GrantFiled: August 25, 2004Date of Patent: March 22, 2005Assignee: Corning IncorporatedInventors: Douglas C. Allan, John T. Brown, Lisa C. Chacon, Adam J. G. Ellison, James C. Fajardo, Stuart Gray, Keith L. House, Karl W. Koch, III, Dale R. Powers, James A. West
-
Patent number: 6862900Abstract: A method and apparatus for forming a glass article such as an optical fiber having a substantially matching viscosity across an interface associated with a first section and a second section of the optical fiber is disclosed herein. The first section has a first halogen concentration and the second section has a second halogen concentration. At least one of a partial pressure of the second halogen provided to a substrate tube and a temperature of the substrate tube is configured to affect the concentration of the second halogen in the second section. Optical fiber embodiments are also included.Type: GrantFiled: September 21, 2001Date of Patent: March 8, 2005Assignee: Corning IncorporatedInventors: Jean-Philippe J. de Sandro, Keith L. House, Joohyun Koh, Prantik Mazumder
-
Patent number: 6810197Abstract: An isotopically-altered, silica based optical fiber is provided having lower losses, broader bandwidth, and broader Raman gain spectrum characteristics than conventional silica-based fiber. A heavier, less naturally abundant isotope of silicon or oxygen is substituted for a lighter, more naturally abundant isotope to shift the infrared absorption to a slightly longer wavelength. In one embodiment, oxygen-18 is substituted for the much more naturally abundant oxygen-16 at least in the core region of the fiber. The resulting isotopically-altered fiber has a minimum loss of 0.044 dB/km less than conventional fiber, and a bandwidth that is 17 percent broader for a loss range between 0.044-0.034 dB/km. The fiber may be easily manufactured with conventional fiber manufacturing equipment by way of a plasma chemical vapor deposition technique. When a 50 percent substitution of oxygen-18 for oxygen-16 is made in the core region of the fiber, the Raman gain spectrum is substantially broadened.Type: GrantFiled: December 18, 2002Date of Patent: October 26, 2004Assignee: Corning IncorporatedInventors: Douglas C. Allan, John T. Brown, Lisa C. Chacon, Adam J. G. Ellison, James C. Fajardo, Stuart Gray, Keith L. House, Karl W. Koch, III, Dale R. Powers, James A. West
-
Patent number: 6796270Abstract: This invention relates to a device for performing plasma chemical vapor deposition (PCVD) for producing coated glass tubes for the drawing of optical fibers. This invention further relates to a device that uses a microwave applicator, and the applicator itself with a profile that allows for a uniform coating across a greater length of the glass tube.Type: GrantFiled: December 18, 2002Date of Patent: September 28, 2004Assignee: Corning IncorporatedInventors: Keith L House, Barton G Lane, III, William B Mattingly, III
-
Publication number: 20040057692Abstract: A method of forming an alkali metal oxide-doped optical fiber by diffusing an alkali metal into a surface of a glass article is disclosed. The silica glass article may be in the form of a tube or a rod, or a collection of tubes or rods. The silica glass article containing the alkali metal, and impurities that may have been unintentionally diffused into the glass article, is etched to a depth sufficient to remove the impurities. The silica glass article may be further processed to form a complete optical fiber preform. The preform, when drawn into an optical fiber, exhibits a low attenuation.Type: ApplicationFiled: August 28, 2002Publication date: March 25, 2004Inventors: Laura J. Ball, Bruno P. M. Baney, Dana C. Bookbinder, Keith L. House, Rostislav R. Khrapko, Susan L. Schiefelbein
-
Patent number: 6650814Abstract: A single mode dispersion and dispersion slope compensating optical fiber includes a central core segment, a depressed moat segment, an annular ring segment, and a cladding layer. Each of the segments of the fiber have a relative refractive index that are selected to provide negative dispersion at a wavelength of within the range of about 1530 nm to about 1620 nm, negative dispersion slope at a wavelength of within the range of about 1530 nm to about 1620 nm, a kappa value of within the range of 40 to about 60 at a wavelength of about 1550 nm, and a fiber cut-off wavelength of less than about 1650 nm, and more preferably less than 1550 nm.Type: GrantFiled: December 11, 2001Date of Patent: November 18, 2003Assignee: Corning IncorporatedInventors: Julie E. Caplen, Jean-Philippe J. deSandro, Keith L. House, Ming-Jun Li, Daniel A. Nolan, V. Srikant
-
Publication number: 20030128955Abstract: An isotopically-altered, silica based optical fiber is provided having lower losses, broader bandwidth, and broader Raman gain spectrum characteristics than conventional silica-based fiber. A heavier, less naturally abundant isotope of silicon or oxygen is substituted for a lighter, more naturally abundant isotope to shift the infrared absorption to a slightly longer wavelength. In one embodiment, oxygen-18 is substituted for the much more naturally abundant oxygen-16 at least in the core region of the fiber. The resulting isotopically-altered fiber has a minimum loss of 0.044 dB/km less than conventional fiber, and a bandwidth that is 17 percent broader for a loss range between 0.044-0.034 dB/km. The fiber may be easily manufactured with conventional fiber manufacturing equipment by way of a plasma chemical vapor deposition technique. When a 50 percent substitution of oxygen-18 for oxygen-16 is made in the core region of the fiber, the Raman gain spectrum is substantially broadened.Type: ApplicationFiled: December 18, 2002Publication date: July 10, 2003Inventors: Douglas C. Allan, John T. Brown, Lisa C. Chacon, Adam J. G. Ellison, James C. Fajardo, Stuart Gray, Keith L. House, Karl W. Koch, Dale R. Powers, James A. West
-
Publication number: 20030124250Abstract: This invention relates to a device for performing plasma chemical vapor deposition (PCVD) for producing coated glass tubes for the drawing of optical fibers. This invention further relates to a device that uses a microwave applicator, and the applicator itself with a profile that allows for a uniform coating across a greater length of the glass tube.Type: ApplicationFiled: December 18, 2002Publication date: July 3, 2003Inventors: Keith L. House, Barton G. Lane, William B. Mattingly
-
Publication number: 20030115909Abstract: The invention relates to the field of PCVD methods of making an optical fiber and apparatuses for use in PCVD methods. The disclosed methods and apparatuses improve the PCVD process by enhancing the efficiency of the deposition process. The use of the disclosed methods and apparatuses, individually or in combination thereof, will result in at least reducing the time necessary to deposit a predetermined amount of glass on a substrate.Type: ApplicationFiled: December 21, 2001Publication date: June 26, 2003Inventors: Keith L. House, Samir Khanna, Barton G. Lane, Prantik Mazumder
-
Publication number: 20030113083Abstract: A single mode dispersion and dispersion slope compensating optical fiber includes a central core segment, a depressed moat segment, an annular ring segment, and a cladding layer. Each of the segments of the fiber have a relative refractive index that are selected to provide negative dispersion at a wavelength of within the range of about 1530 nm to about 1620 nm, negative dispersion slope at a wavelength of within the range of about 1530 nm to about 1620 nm, a kappa value of within the range of 40 to about 60 at a wavelength of about 1550 nm, and a fiber cut-off wavelength of less than about 1650 nm, and more preferably less than 1550 nm.Type: ApplicationFiled: December 11, 2001Publication date: June 19, 2003Inventors: Julie E. Caplen, Jean-Philippe J. deSandro, Keith L. House, Ming-Jun Li, Daniel A. Nolan, V. Srikant
-
Publication number: 20030104139Abstract: This present invention is directed to an apparatus for depositing a plasma chemical vapor deposition (PCVD) coating on the inside of a preform used for the drawing of optical fibers. This invention further relates to a novel microwave applicator design used in the apparatus; preferably allowing for a more intense, circumferentially symmetric plasma about the longitudinal axis of the preform, under normal operating conditions; resulting in a more uniform coating and a reduced applicator length, and a method for making the coated preform.Type: ApplicationFiled: March 22, 2002Publication date: June 5, 2003Inventors: Keith L. House, Samir Khanna, Barton G. Lane, Prantik Mazumder
-
Publication number: 20030056549Abstract: A method and apparatus for forming a glass article such as an optical fiber having a substantially matching viscosity across an interface associated with a first section and a second section of the optical fiber is disclosed herein. The first section has a first halogen concentration and the second section has a second halogen concentration. At least one of a partial pressure of the second halogen provided to a substrate tube and a temperature of the substrate tube is configured to affect the concentration of the second halogen in the second section. Optical fiber embodiments are also included.Type: ApplicationFiled: September 21, 2001Publication date: March 27, 2003Inventors: Jean-Philippe J. de Sandro, Keith L. House, Joohyun Koh, Prantik Mazumder
-
Publication number: 20030056548Abstract: A method and apparatus for providing a uniform coating thickness along an axial direction within an internal portion of a substrate tube is disclosed. A gas delivery unit is configured to coat the internal portion of the substrate tube. The gas delivery unit includes an insert. At least one of an inner diameter of the insert, a length of the insert, a gap between the insert and the substrate tube, and a flow of the gas mixture delivered to the substrate tube is configured to provide the uniform coating thickness along the axial direction.Type: ApplicationFiled: September 21, 2001Publication date: March 27, 2003Inventors: Jean-Philippe J. de Sandro, Keith L. House, Joohyun Koh, Prantik Mazumder
-
Patent number: 5711778Abstract: A method and apparatus for annealing glass sheets, in which glass sheets are retained within a frame having edge retaining members. The edge retaining members retain the edges of the glass sheet during the annealing operation, thereby hindering warpage and surface damage of the glass sheet during the annealing process.Type: GrantFiled: June 26, 1996Date of Patent: January 27, 1998Assignee: Corning IncorporatedInventor: Keith L. House