Patents by Inventor C. Charles Yu
C. Charles Yu 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: 8047023Abstract: A method for producing a fused silica glass containing titania includes synthesizing particles of silica and titania by delivering a mixture of a silica precursor and a titania precursor to a burner, growing a porous preform by successively depositing the particles on a deposition surface while rotating and translating the deposition surface relative to the burner, and consolidating the porous preform into a dense glass.Type: GrantFiled: April 27, 2001Date of Patent: November 1, 2011Assignee: Corning IncorporatedInventors: Bradford Giles Ackerman, Kenneth Edward Hrdina, Lisa Anne Moore, Nikki Jo Russo, C. Charles Yu
-
Publication number: 20030121283Abstract: The invention relates to optical quality glass made by vacuum casting very stable, low viscosity aqueous suspension of submicron silica particles. The suspension is a mixture of silica particles and aqueous ammonia, and is characterized by a solid loading of up to 75 weight percent.Type: ApplicationFiled: December 31, 2002Publication date: July 3, 2003Inventor: C. Charles Yu
-
Patent number: 6548142Abstract: The present invention describes a glass honeycomb structure having a variety of shapes and sizes depending on its ultimate application. Unlike prior art honeycomb structures made from ceramics, the inventive glass honeycomb can be readily bent and/or redrawn. Furthermore, the inventive honeycomb structure is lightweight, yet able to support heavy loads on its end faces. Therefore, the inventive honeycomb can be used as a light-weight support for such objects as mirrors. Other useful properties of the extruded glass honeycomb are its high softening temperature, its transparency to ultraviolet and visible light, and its ability to be redrawn. Embodiments that rely upon one or more of these properties include: a bio-reactor, a membrane reactor, a capillary flow controller, a high efficiency filtration system, in-situ water treatment, high temperature dielectric material, and photonic band gap material.Type: GrantFiled: February 17, 2000Date of Patent: April 15, 2003Assignee: Corning IncorporatedInventors: Gitimoy Kar, Kenneth E. Hrdina, John F. Wight, Jr., C. Charles Yu
-
Patent number: 6479129Abstract: The present invention describes an extrusion process for manufacturing a titanium-containing silicate glass honeycomb structure, having a variety of shapes and sizes depending on its ultimate application. The titanium-containing glass honeycomb has a very low coefficient of thermal expansion (CTE) and the CTE can be varied by adjusting the titanium level to match the CTE of members that are bonded to the honeycomb. Furthermore, the inventive honeycomb structure is lightweight, yet able to support heavy loads on its end faces. Therefore, the inventive honeycomb can be advantageously used as a light-weight support for such objects as mirrors. Especially contemplated is using these inventive honeycomb supports for mirrors used in extraterresial environments where temperature extremes are present. These honeycombs can be used singularly or in aggregates to provide such support.Type: GrantFiled: February 17, 2000Date of Patent: November 12, 2002Assignee: Corning IncorporatedInventors: Gitimoy Kar, Kenneth E. Hrdina, John F. Wight, Jr., C. Charles Yu
-
Publication number: 20020157421Abstract: A method for producing a fused silica glass containing titania includes synthesizing particles of silica and titania by delivering a mixture of a silica precursor and a titania precursor to a burner, growing a porous preform by successively depositing the particles on a deposition surface while rotating and translating the deposition surface relative to the burner, and consolidating the porous preform into a dense glass.Type: ApplicationFiled: April 27, 2001Publication date: October 31, 2002Inventors: Bradford G. Ackerman, Kenneth E. Hrdina, Lisa A. Moore, Nikki J. Russo, C. Charles Yu
-
Patent number: 6468374Abstract: The present invention describes an extrusion process for manufacturing a glass honeycomb structure having a variety of shapes and sizes depending on its ultimate application. Unlike prior art honeycomb structures made from ceramics, the inventive glass honeycomb can be readily viscously bent and/or redrawn. Furthermore, the inventive honeycomb structure is lightweight, yet able to support heavy loads on its end faces. Therefore, the inventive honeycomb can be used as a light-weight support for such objects as mirrors. These honeycombs can be used singularly or in aggregates to provide such support. Embodiments are described wherein the mass of the honeycomb is further reduced by removing select portions of the honeycomb without deleteriously impacting its ability for load bearing.Type: GrantFiled: February 17, 2000Date of Patent: October 22, 2002Assignee: Corning IncorporatedInventors: Gitimoy Kar, Kenneth E. Hrdina, John F. Wight, Jr., C. Charles Yu
-
Patent number: 6404489Abstract: This light scattering technique for size measurement is based on the fact that an illuminated particle (inclusion) serves as a secondary radiation source in a manner which is related to its size. This technique allows for detection of inclusions in the interior of a transparent sheet. When illuminated with a beam of monochromatic light such as a laser beam as the primary light source, the angular distribution of the scattered intensity originated from the inclusion in the micron to submicron range, is a function of intensity, wavelength and index of refraction. The primary beam of light passes through the sheet on a straight line path parallel to a horizontal axis. A detector positioned at an angle to the horizontal axis detects the secondary scattered light.Type: GrantFiled: March 29, 2000Date of Patent: June 11, 2002Assignee: Corning IncorporatedInventor: C. Charles Yu
-
Patent number: 6387511Abstract: These glass bodies are light weight porous structures such as a boules of high purity fused silica or ultra-low expansion glass. More specifically, the porous structures are supports for mirror blanks. Porous glass is made utilizing flame deposition of pure silica or doped silica in a manner similar to the production of high purity fused silica. Bubbles or seeds are formed in the glass during laydown. Several means of creating and controlling these seeds are available. The processes use incomplete combustion to create the bubbles. There are a number of different steps to create the incomplete combustion. One such step is a short distance between the hydrolysis flame and the glass precursor.Type: GrantFiled: July 27, 2000Date of Patent: May 14, 2002Assignee: Corning IncorporatedInventors: Kenneth E. Hrdina, Daniel R. Sempolinski, Michael H. Wasilewski, C. Charles Yu
-
Patent number: 6388745Abstract: This light scattering technique for size measurement is based on the fact that an illuminated particle (inclusion) serves as a secondary radiation source in a manner which is related to its size. This technique allows for detection of inclusions in the interior of transparent solid media, such as bulk glass. When illuminated with a beam of monochromatic light such as a laser beam as the primary light source, the angular distribution of the scattered intensity originated from the inclusion in the micron to submicron range, is a function of intensity, wavelength and index of refraction. A lens and light trap block the primary light for reaching a detector. The light trap, however, allows the secondary scattered light to reach the detector.Type: GrantFiled: March 29, 2000Date of Patent: May 14, 2002Assignee: Corning IncorporatedInventors: Harrie J. Stevens, C. Charles Yu
-
Publication number: 20010040678Abstract: This light scattering technique for size measurement is based on the fact that an illuminated particle (inclusion) serves as a secondary radiation source in a manner which is related to its size. This technique allows for detection of inclusions in the interior of transparent solid media, such as bulk glass. When illuminated with a beam of monochromatic light such as a laser beam as the primary light source, the angular distribution of the scattered intensity originated from the inclusion in the micron to submicron range, is a function of intensity, wavelength and index of refraction. A lens and light trap block the primary light for reaching a detector. The light trap, however, allows the secondary scattered light to reach the detector.Type: ApplicationFiled: March 29, 2000Publication date: November 15, 2001Inventors: Harrie J. Stevens, C. Charles Yu
-
Patent number: 6260385Abstract: A method and a burner for manufacturing silica-containing soot is disclosed. The method includes providing a liquid silicon-containing feedstock and a gas mixture and ejecting the liquid-gas mixture from an orifice into a combustion site to convert the silica-containing feedstock into silica containing soot. The burner includes a plurality of channels for delivering a gas to provide a flame, an effervescent atomizer for atomizing a liquid, silicon-containing feedstock and a rail for guiding the atomized liquid, silicon-containing feedstock into the burner flame. The method and burner can be used to produce silica-containing articles such as high purity fused silica optical members and waveguides.Type: GrantFiled: April 15, 1999Date of Patent: July 17, 2001Assignee: Corning IncorporatedInventors: Daniel R. Sempolinski, Michael H. Wasilewski, C. Charles Yu