Patents by Inventor Hari Nair

Hari Nair 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).

  • Publication number: 20150126756
    Abstract: In a process for producing propylene oxide, cyclohexylbenzene is contacted with an oxygen-containing compound under oxidation conditions with or without a suitable catalyst to produce an oxidation reaction effluent comprising cyclohexylbenzene hydroperoxide. At least a portion of the cyclohexylbenzene hydroperoxide is then reacted with propylene in the presence of an epoxidation catalyst under conditions effective to produce an epoxidation reaction effluent comprising phenylcyclohexanol and propylene oxide.
    Type: Application
    Filed: August 30, 2012
    Publication date: May 7, 2015
    Applicant: ExxonMobil Chemical Patents Inc.
    Inventors: Hari Nair, Charles Morris Smith, James R. Lattner, Krystle J. Chavez, James C. Vartuli
  • Publication number: 20150126782
    Abstract: In a process for producing cyclohexylbenzene, hydrogen, and benzene are contacted in a first reaction zone under conditions effective to produce a product effluent containing residual benzene in the vapor phase and cyclohexylbenzene in the liquid phase. The product effluent is separated into a first stream that is rich in residual benzene in the vapor phase as compared to the product effluent and a second stream that is rich in cyclohexylbenzene in the liquid phase as compared to the product effluent. At least a portion of the first stream is cooled to condense at least a portion of the residual benzene in the vapor phase to the liquid phase and produce a condensate stream. At least a portion of the condensate stream is recycled to the first reaction zone.
    Type: Application
    Filed: September 5, 2012
    Publication date: May 7, 2015
    Applicant: ExxonMobil Chemical Company - Law Technology
    Inventors: Hari Nair, Christopher L. Becker, James R. Lattner, Jihad M. Dakka
  • Publication number: 20150045596
    Abstract: In a process for producing cyclohexylbenzene, benzene is contacted with hydrogen in the presence of a hydroalkylation catalyst under hydroalkylation conditions effective to form a first effluent stream comprising cyclohexylbenzene, cyclohexane, and benzene. At least a portion of the cyclohexane from the first effluent stream is then contacted with hydrogen in the presence of a dehydrogenation catalyst under dehydrogenation conditions effective to convert at least some of the cyclohexane into benzene contained in a second effluent stream. At least some of the hydrogen is supplied to the process so as to contact the dehydrogenation zone (e.g., the dehydrogenation catalyst) before contacting the hydroalkylation catalyst.
    Type: Application
    Filed: December 5, 2012
    Publication date: February 12, 2015
    Inventors: Christopher L. Becker, James R. Lattner, Keith H. Kuechler, Hari Nair
  • Publication number: 20150023000
    Abstract: A shelf for supporting items including but not limited to in refrigerated appliances includes in an integrated fashion a supporting surface and around the perimeter of the supporting surface of similar dimensions. A lighting subassembly is mountable to or integrated in the framing. Electrical power can be through touchless or contact electrical communication. In one form the supporting surface is a single substantially clear plate. In another form the supporting surface is a thin glass top layer and a bottom layer overmolded with the framing to the thin glass top layer.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 22, 2015
    Inventors: JAMES W. KENDALL, MATTHEW P. EBROM, ERIC ANDREW HILL, TIMOTHY T. MURPHY, HARI NAIR, BRIAN N. RADFORD
  • Publication number: 20150018583
    Abstract: In a process for producing phenol, benzene is reacted with a source of hydrogen containing methane in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction effluent comprising cyclohexylbenzene, benzene, hydrogen, and methane. A first stream comprising hydrogen, methane, and benzene is removed from the hydroalkylation reaction effluent and the first stream is washed with a second stream containing cyclohexylbenzene to produce a benzene-depleted hydrogen stream containing hydrogen and methane and a wash stream containing cyclohexylbenzene and benzene.
    Type: Application
    Filed: December 4, 2012
    Publication date: January 15, 2015
    Inventors: Christopher L. Becker, James R. Lattner, Keith H. Kuechler, Hari Nair
  • Publication number: 20150011812
    Abstract: In a process for producing cyclohexylbenzene, hydrogen and benzene are introduced to a first hydroalkylation reaction zone which contains a hydroalkylation catalyst and which is operated under at least partly liquid phase conditions sufficient to effect hydroalkylation of benzene to produce a mixed liquid/vapor phase effluent comprising cyclohexylbenzene and unreacted benzene, wherein at least a portion of the unreacted benzene is in the vapor phase. At least a portion of the effluent is cooled to condense a liquid phase stream containing at least some of the cyclohexylbenzene in the effluent portion and leave a residual stream containing at least some of the unreacted benzene and cyclohexylbenzene. At least a portion of the liquid stream is recycled to the first hydroalkylation reaction zone or to contact the mixed phase effluent exiting the first hydroalkylation reaction zone. Other methods of cooling the reaction effluent are disclosed.
    Type: Application
    Filed: January 28, 2013
    Publication date: January 8, 2015
    Inventors: Christopher L. Becker, Hari Nair, James R. Lattner, Keith H. Kuechler
  • Publication number: 20150005531
    Abstract: In a process for producing phenol, benzene is hydroalkylated with hydrogen in the presence of a catalyst under conditions effective to produce a hydroalkylation reaction product comprising cyclohexylbenzene and cyclohexane. At least a portion of the cyclohexane from said hydroalkylation reaction product is then dehydrogenated to produce a dehydrogenation effluent comprising benzene, toluene and hydrogen. At least a portion of the dehydrogenation effluent is washed with a benzene-containing stream to transfer at least a portion of the toluene from the dehydrogenation effluent to the benzene-containing stream.
    Type: Application
    Filed: November 30, 2012
    Publication date: January 1, 2015
    Applicant: ExxonMobil Chemical Patents Inc.
    Inventors: Christopher L. Becker, James R. Lattner, Keith H. Kuechler, Hari Nair
  • Publication number: 20120323045
    Abstract: In a process for the dehydrogenation of cyclohexanone to produce phenol, a feed comprising cyclohexanone is contacted with a dehydrogenation catalyst under dehydrogenation conditions comprising a temperature of less than 400° C. and a pressure of less than 690 kPa, gauge, such 0.1 to 50 wt % of the cyclohexanone in said feed is converted to phenol and the dehydrogenation product contains less than 100 ppm by weight of alkylbenzenes.
    Type: Application
    Filed: December 17, 2010
    Publication date: December 20, 2012
    Inventors: Teng Xu, Jihad M. Dakka, Christopher L. Becker, Keith H. Kuechler, Francisco M. Benitez, Charles M. Smith, Hari Nair
  • Publication number: 20080043850
    Abstract: Methods and apparatus, including computer program products, implementing and using techniques for computing motion vectors in a digital video sequence are disclosed. A recursive hierarchical method is used to determine a motion vector by using multiple resolution levels of the image frames. A best motion vector is first determined for the lowest resolution level. The best motion vector is propagated to a higher resolution level, where some adjustments are made and a new best motion vector is determined. The new best motion vector is propagated to yet another higher resolution level, where more adjustments are made and another new best motion vector is determined. This process is repeated until the highest, original, resolution level has been reached and a best motion vector has been identified. The identified best motion vector at the original resolution level is used for performing motion compensation.
    Type: Application
    Filed: October 25, 2007
    Publication date: February 21, 2008
    Applicant: GENESIS MICROCHIP INC.
    Inventors: Hari Nair, Gordon Petrides
  • Patent number: 7154509
    Abstract: An apparatus and method for allowing color adjustments in display devices is disclosed The apparatus comprises a multi-resolution structure for providing color adjustments; and an interpolator for interpolating at least one offset of the multi-resolution structure. An apparatus and method in accordance with the present invention uses a combination of color look-up tables with different levels of resolution, followed by interpolation to provide a display process which has high resolution but utilizes minimal memory. In so doing, memory is used for high-resolution areas only where needed. The multi-resolution structure is a very good approximation to the theoretical mapping table in the areas where it is needed. At the same time, since the high resolution areas are localized, a significant reduction in memory storage is possible.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: December 26, 2006
    Assignee: Genesis Microchip Inc.
    Inventors: Hari Nair, Neha Agrawal, Saif Choudhary, Shashi Kumar, Arun Johary
  • Patent number: 7046252
    Abstract: A method and apparatus that allows a display device to adaptively and automatically control display contrast and color is disclosed. The method and system in accordance with the present invention can be described by the following sequential process: 1. Separating an input image data value into its luma and chroma components. 2. Collecting the luma distribution data over the entire image or a specified window. 3. Analyzing the luma distribution. 4. Generating an appropriate contrast control response that modifies the input luma component to generate an output luma component, on a pixel by pixel basis. 5. Analyzing the input luma component and the output luma component, and an input chroma component, to generate an appropriate modification for the chroma component, on a pixel by pixel basis.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: May 16, 2006
    Assignee: Genesis Microchip Inc.
    Inventors: Hari Nair, Neha Agrawal, Saif Choudhary, Ashish Neema, Arun Johary
  • Publication number: 20050195278
    Abstract: Methods and apparatus, including computer program products, implementing and using techniques for camera pan vector estimation, are disclosed. A camera model is provided for representing motion vectors based on a plurality of parameters. A distribution of the motion vectors is generated. A cluster in the distribution of motion vectors is identified. A center of mass of the identified cluster is determined. The camera pan vector is provided based upon the determined center of mass.
    Type: Application
    Filed: October 7, 2004
    Publication date: September 8, 2005
    Inventor: Hari Nair
  • Publication number: 20050135482
    Abstract: Methods and apparatus, including computer program products, implementing and using techniques for computing motion vectors in a digital video sequence are disclosed. A recursive hierarchical method is used to determine a motion vector by using multiple resolution levels of the image frames. A best motion vector is first determined for the lowest resolution level. The best motion vector is propagated to a higher resolution level, where some adjustments are made and a new best motion vector is determined. The new best motion vector is propagated to yet another higher resolution level, where more adjustments are made and another new best motion vector is determined. This process is repeated until the highest, original, resolution level has been reached and a best motion vector has been identified. The identified best motion vector at the original resolution level is used for performing motion compensation.
    Type: Application
    Filed: April 26, 2004
    Publication date: June 23, 2005
    Inventors: Hari Nair, Gordon Petrides
  • Publication number: 20050135483
    Abstract: Methods and apparatus, including computer program products, implementing and using techniques for performing temporal motion vector filtering in digital video are disclosed. A recursive hierarchical process is used to determine a motion vector. In the recursive hierarchical process, a neighborhood of old motion vectors is filtered to generate a first estimated motion vector for an image patch in a pair of two image frames. The filtering process uses multiple vectors in a neighborhood around the old motion vector to improve the prediction of the first estimated motion vector. The temporal vector partitioning process separates motion vectors associated with an object from motion vectors associated with a background before selecting a best motion vector, which improves the selection process. The process also works well in the absence of object/background boundaries, as in this case the outlier (incorrect) vector or vectors will be separated out from the good vectors.
    Type: Application
    Filed: April 26, 2004
    Publication date: June 23, 2005
    Inventor: Hari Nair
  • Publication number: 20050135485
    Abstract: Methods and apparatus, including computer program products, implementing and using techniques for determining motion vectors to be used for interpolation of intermediary frames in a digital video sequence are disclosed. A first image frame including several image patches is received. A second image frame including one or more image patches corresponding to the image patches in the first image frame is received. For each image patch that occurs in both frames, the following operations occur: forward and backward motion vectors are determined for the image patch in the first image frame, forward and backward motion vectors are determined for the image patch in the second image frame, one motion vector from the first image frame and one motion vector from the second frame are selected and the selected motion vectors are used to establish an intermediary position of the image patch in an interpolated frame between the frames.
    Type: Application
    Filed: June 10, 2004
    Publication date: June 23, 2005
    Inventors: Hari Nair, Gordon Petrides
  • Publication number: 20050035974
    Abstract: Automatically and adaptively controlling contrast and color of a display device by computing a normalized histogram of a current image, computing degrees of correlation between the normalized histogram and a number of template histograms, sorting the template histograms based upon the associated degrees of correlation, selecting a number of the best correlated template histograms based on the sorting, blending the selected the transfer functions associated with the selected template histograms to form a blended transfer function, and applying the blended transfer function to the current image.
    Type: Application
    Filed: May 18, 2004
    Publication date: February 17, 2005
    Inventors: Hari Nair, Neha Agrawal, Saif Choudhary, Ashish Neema, Arun Johary
  • Patent number: 6833839
    Abstract: An apparatus and method for allowing color adjustments in display devices is disclosed The apparatus comprises a multi-resolution structure for providing color adjustments; and an interpolator for interpolating at least one offset of the multi-resolution structure. An apparatus and method in accordance with the present invention uses a combination of color look-up tables with different levels of resolution, followed by interpolation to provide a display process which has high resolution but utilizes minimal memory. In so doing, memory is used for high-resolution areas only where needed. The multi-resolution structure is a very good approximation to the theoretical mapping table in the areas where it is needed. At the same time, since the high resolution areas are localized, a significant reduction in memory storage is possible.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: December 21, 2004
    Assignee: Genesis Microchip Inc.
    Inventors: Hari Nair, Neha Agrawal, Saif Choudhary, Shashi Kumar, Arun Johary
  • Publication number: 20040246268
    Abstract: An apparatus and method for allowing color adjustments in display devices is disclosed The apparatus comprises a multi-resolution structure for providing color adjustments; and an interpolator for interpolating at least one offset of the multi-resolution structure. An apparatus and method in accordance with the present invention uses a combination of color look-up tables with different levels of resolution, followed by interpolation to provide a display process which has high resolution but utilizes minimal memory. In so doing, memory is used for high-resolution areas only where needed. The multi-resolution structure is a very good approximation to the theoretical mapping table in the areas where it is needed. At the same time, since the high resolution areas are localized, a significant reduction in memory storage is possible.
    Type: Application
    Filed: July 12, 2004
    Publication date: December 9, 2004
    Inventors: Hari Nair, Neha Agrawal, Saif Choudhary, Shashi Kumar, Arun Johary
  • Publication number: 20040179022
    Abstract: A method and apparatus that allows a display device to adaptively and automatically control display contrast and color is disclosed.
    Type: Application
    Filed: March 26, 2004
    Publication date: September 16, 2004
    Applicant: Genesis Microchip Inc.
    Inventors: Hari Nair, Neha Agrawal, Saif Choudhary, Ashish Neema, Arun Johary
  • Patent number: 6778183
    Abstract: A method and apparatus that allows a display device to adaptively and automatically control display contrast and color is disclosed. The method and system in accordance with the present invention can be described by the following sequential process: 1. Separating an input image data value into its luma and chroma components. 2. Collecting the luma distribution data over the entire image or a specified window. 3. Analyzing the luma distribution. 4. Generating an appropriate contrast control response that modifies the input luma component to generate an output luma component, on a pixel by pixel basis. 5. Analyzing the input luma component and the output luma component, and an input chroma component, to generate an appropriate modification for the chroma component, on a pixel by pixel basis.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: August 17, 2004
    Assignee: Genesis Microchip Inc.
    Inventors: Hari Nair, Neha Agrawal, Saif Choudhary, Ashish Neema, Arun Johary