Patents by Inventor Srinivasa Rao Vaddiraju

Srinivasa Rao Vaddiraju 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: 9187358
    Abstract: A process using a three-piece mold for making a three-dimensionally shaped glass article having a flat area and a curved/bend area is disclosed. The process includes placing a glass sheet on a mold having a shaping surface with a desired surface profile for the shaped glass article including a flat area and a bend area, moving a flat area plunger toward the glass sheet to compress the glass sheet, heating a portion of the glass sheet corresponding to an area above the bend area of the mold to a temperature above a forming temperature, and moving a bend area plunger toward the heated glass sheet to compress the heated glass sheet. A temperature of the glass sheet in the area above the bend area of the mold is higher than a temperature of the glass sheet in the area above the flat area of the mold when compressing the heated glass sheet with the bend area plunger.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: November 17, 2015
    Assignee: CORNING INCORPORATED
    Inventors: Weiwei Luo, Elias Panides, Rohit Rai, Irene Marjorie Slater, Ljerka Ukrainczyk, Srinivasa Rao Vaddiraju, Sam Samer Zoubi
  • Publication number: 20150135667
    Abstract: A skinning apparatus and a method of skinning a porous ceramic. The apparatus includes an axial skinning manifold. The axial skinning manifold includes a curved adaptive pipe to flow cement in a circumferential direction from an inlet at a first position and through an adaptive opening along an inner bend of the curve through a land channel disposed along the inner bend. The land channel emits the cement at a constant velocity from a land opening extending proximate the first position to a second position spaced apart from the first position. The land outlet emits cement at a constant velocity around the outer periphery of the porous ceramic to dispose a uniform skin thereon as the porous ceramic moves axially relative to the land outlet.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 21, 2015
    Applicant: Corning Incorporated
    Inventors: Thomas Richard Chapman, John Paul Bir Singh, Amber Leigh Tremper, Srinivasa Rao Vaddiraju, Kevin Lee Wasson
  • Publication number: 20150105896
    Abstract: A process for operating an axial skinning apparatus for continuous manufacture of skinned ceramic honeycomb parts, including: determining the physical process parameters of the apparatus including: the rheology of the flowable skin cement; the geometry of the part to be skinned; and the geometry of the annulus gap of the skinning chamber; and calculating a plurality of dimensionless pressure gradient values (Lambda (?)) according to the formula (1): ? = ( ? ? ? P ) ? R 2 ? m ? ? L ? ( R V ) n ( 1 ) where ?P, P, R, V, L, and m and n are as defined herein; plotting a plurality of manifold pressures versus a plurality of part velocities; and selecting at least one operating window based on the skin quality of a plurality of preliminarily skinned parts.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 16, 2015
    Inventors: Ralph Henry Hagg, Parasuram Padmanabhan Harihara, John Paul Bir Singh, Srinivasa Rao Vaddiraju
  • Publication number: 20150085365
    Abstract: A resonant waveguide article, including: a polymeric substrate having at least one integral grating region, wherein the article has a low birefringence property of for example, from about 5 to 270 nm/cm, as defined herein. Also disclosed is a microplate including the resonant waveguide article, and an integral well plate bonded to the sensor article, as defined herein. Also disclosed are methods of making a sensor article, and a method of making and using the microplate including the sensor article, as defined herein.
    Type: Application
    Filed: March 26, 2013
    Publication date: March 26, 2015
    Applicant: Corning Incorporated
    Inventors: John Claude Cadotte, JR., John Stephen Peanasky, Christopher Lee Timmons, Srinivasa Rao Vaddiraju, Nikhil Baburam Vasudeo, Tyler Wezner
  • Publication number: 20140335322
    Abstract: A process using a three-piece mold for making a three-dimensionally shaped glass article having a flat area and a curved/bend area is disclosed. The process includes placing a glass sheet on a mold having a shaping surface with a desired surface profile for the shaped glass article including a flat area and a bend area, moving a flat area plunger toward the glass sheet to compress the glass sheet, heating a portion of the glass sheet corresponding to an area above the bend area of the mold to a temperature above a forming temperature, and moving a bend area plunger toward the heated glass sheet to compress the heated glass sheet. A temperature of the glass sheet in the area above the bend area of the mold is higher than a temperature of the glass sheet in the area above the flat area of the mold when compressing the heated glass sheet with the bend area plunger.
    Type: Application
    Filed: May 5, 2014
    Publication date: November 13, 2014
    Applicant: CORNING INCORPORATED
    Inventors: Weiwei Luo, Elias Panides, Rohit Rai, Irene Marjorie Slater, Ljerka Ukrainczyk, Srinivasa Rao Vaddiraju, Sam Samer Zoubi
  • Patent number: 8234909
    Abstract: Methods are disclosed for inspecting a cylindrical porous ceramic body by positioning a diffuser near, and spaced apart from, the first end of a ceramic body; flowing a tracer flow toward the diffuser, wherein a first portion of the tracer flow passes through the diffuser, and a second portion of the tracer flow does not pass through the diffuser, the first and second portions of the tracer flow then entering the first end of the ceramic body, wherein the average velocity of the first portion of the tracer flow entering the ceramic body VAVG1 is lower than the average velocity of the second portion of the tracer flow entering the ceramic body VAVG2; directing light toward the second end of the ceramic body; and detecting reflected light coming from a location proximate the second transverse face at the second end of the ceramic body.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: August 7, 2012
    Assignee: Corning Incorporated
    Inventors: Balram Suman, Srinivasa Rao Vaddiraju, Wei Xu
  • Patent number: 8142859
    Abstract: A method of applying a cement mixture to an exposed matrix of intersecting walls of a honeycomb body is disclosed. The method may include the steps of providing an applicator, feeding the cement mixture into applicator, forcing the cement mixture to exit the applicator with a substantially uniform velocity, while depositing the cement mixture on the exposed matrix of the honeycomb body.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: March 27, 2012
    Assignee: Corning Incorporated
    Inventors: Jeffrey John Domey, Luiz Eduardo Ferri, Robert Daniel Parker, Srinivasa Rao Vaddiraju, Wei Xu, William Joseph Zaidel
  • Publication number: 20110048109
    Abstract: Methods are disclosed for inspecting a cylindrical porous ceramic body by positioning a diffuser near, and spaced apart from, the first end of a ceramic body; flowing a tracer flow toward the diffuser, wherein a first portion of the tracer flow passes through the diffuser, and a second portion of the tracer flow does not pass through the diffuser, the first and second portions of the tracer flow then entering the first end of the ceramic body, wherein the average velocity of the first portion of the tracer flow entering the ceramic body VAVG1 is lower than the average velocity of the second portion of the tracer flow entering the ceramic body VAVG2; directing light toward the second end of the ceramic body; and detecting reflected light coming from a location proximate the second transverse face at the second end of the ceramic body.
    Type: Application
    Filed: August 26, 2009
    Publication date: March 3, 2011
    Inventors: Balram Suman, Srinivasa Rao Vaddiraju, Wei Xu
  • Publication number: 20090297765
    Abstract: A method of applying a cement mixture to an exposed matrix of intersecting walls of a honeycomb body is disclosed. The method may include the steps of providing an applicator, feeding the cement mixture into applicator, forcing the cement mixture to exit the applicator with a substantially uniform velocity, while depositing the cement mixture on the exposed matrix of the honeycomb body.
    Type: Application
    Filed: May 29, 2009
    Publication date: December 3, 2009
    Inventors: Jeffrey John Domey, Luiz Eduardo Ferri, Robert Daniel Parker, Srinivasa Rao Vaddiraju, Wei Xu, William Joseph Zaidel