Patents by Inventor Narayanan Ganapathy

Narayanan Ganapathy 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: 20140357830
    Abstract: Disclosed herein is a method for producing a purified 2-aryl-3,3-bis(4-hydroxyaryl) phthalimidine of formula (I) wherein R1 is hydrogen or a C1-25 hydrocarbyl group and R2 is a hydrogen, a C1-25 hydrocarbyl group, or a halogen, and wherein the method comprises dissolving a crude phthalimidine compound in an aqueous base solution; precipitating the dissolved, crude phthalimidine compound from the aqueous base solution by adding an acid in an amount effective to lower the pH of the solution to 9.0 to 12.0, to provide a semicrude phthalimidine compound; and isolating the semicrude phthalimidine compound from the aqueous base solution, to provide the purified 2-aryl-3,3-bis(4-hydroxyaryl) phthalimidine of formula (I), and having a phenolphthalein compound content of less than 2,500 ppm, based on the weight of the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine.
    Type: Application
    Filed: August 18, 2014
    Publication date: December 4, 2014
    Inventors: Venkata Rama Narayanan Ganapathy BHOTLA, Balakrishnan GANESAN, Kishan GURRAM, Salkod Parameshwar MALLIKA, Kumar Arun SATYANARAYANA, Swaminathan SHUBASHREE
  • Patent number: 8809486
    Abstract: Disclosed is a method for producing a purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I) wherein R1 is hydrogen or a C1-25 hydrocarbyl group and R2 is a hydrogen, a C1-25 hydrocarbyl group, or a halogen, and wherein the method comprises dissolving a crude phthalimidine compound in an aqueous base solution; precipitating the dissolved, crude phthalimidine compound from the aqueous base solution by adding an acid in an amount effective to lower the pH of the solution to 9.0 to 12.0, to provide a semicrude phthalimidine compound; and isolating the semicrude phthalimidine compound from the aqueous base solution, to provide the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I), and having a phenolphthalein compound content of less than 2,500 ppm, based on the weight of the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: August 19, 2014
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Venkata Rama Narayanan Ganapathy Bhotla, Balakrishnan Ganesan, Kishan Gurram, Salkod Parameshwar Mallika, Kumar Arun Satyanarayana, Swaminathan Shubashree
  • Patent number: 8769612
    Abstract: A technique that enables a portable device to be automatically associated with a plurality of computers. Information that a computer can use to authenticate a portable device and establish a trusted relationship prior to creating an association with the portable device is created and stored in a data store that is accessible by a plurality of computers and is associated with a user of the portable device. When a computer discovers such a portable device with which it is not yet associated, the computer can identify a user logged into the computer and use information identifying the user to retrieve authentication information that is device independent and is expected to be presented by the portable device to authenticate it and allow automatic association.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: July 1, 2014
    Assignee: Microsoft Corporation
    Inventor: Narayanan Ganapathy
  • Publication number: 20130067531
    Abstract: Embodiments include processes, systems, and devices for brokering application access to capabilities, such as device capabilities. An access broker receives requests from applications to access capabilities. The access broker determines whether to grant access based at least in part on whether the application manifest declares the capability. The access broker also may cause a user interface element to be displayed requesting user consent to the access request. Also, an in-application user interface element is provided that displays capability access settings for a particular application. The in-application user interface element includes selectable options for changing those settings. Changes in those settings via the user interface update the settings in the access broker.
    Type: Application
    Filed: September 12, 2011
    Publication date: March 14, 2013
    Applicant: MICROSOFT CORPORATION
    Inventors: Max Glenn Morris, Narayanan Ganapathy, Darren R. Davis, David A. Goll, Paul Sliwowicz, George Evangelos Roussos, Rouella J. Mendonca
  • Patent number: 8365201
    Abstract: A computer system that recognizes multi-function devices and associates functions with multi-function devices. Each multi-function device may be represented by a multi-function object, allowing tools, applications or other components within the computer to take actions relating to the entire device or relating to a function based on the association of that function with other functions in the same device. These actions include displaying information about devices, instead of or in addition to information about functions. Actions also include selecting functions based on proximity within a device. Functions may be associated with a multi-function device using a unique device identifier provided by the device or generated for the function based on a connection hierarchy between functions and the computer. Devices may be configured to provide the same identifier regardless of the transport over which the device is accessed.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: January 29, 2013
    Assignee: Microsoft Corporation
    Inventors: Doron J. Holan, Randall E. Aull, Narayanan Ganapathy, James G. Cavalaris, Esaias E. Greeff, Douglas K. Brubacher
  • Patent number: 8347319
    Abstract: Multi-function devices expose multiple functions to device drivers or other lower-level software. Device function providers can interface with such drivers or lower-level software and can provide information, including device identifiers regarding such functions, to a device display object infrastructure. A device display object can then be created that encompasses one or more functions such that, in one embodiment, the device display object corresponds to a single, physical multi-function device. Alternatively, any combination of functionality from one or more physical devices can be combined into a single device display object representing a virtual multi-function device. Properties of the device display object can be set with reference to user-specified settings, remotely maintained metadata, locally available metadata, and information associated with each function.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: January 1, 2013
    Assignee: Microsoft Corporation
    Inventors: Esaias Engelbertus Greeff, Douglas K. Brubacher, Narayanan Ganapathy, Randall E. Aull, Doron J. Holan, Neil Sandlin, James G. Cavalaris
  • Publication number: 20120309926
    Abstract: Disclosed is a method for producing a purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I) wherein R1 is hydrogen or a C1-25 hydrocarbyl group and R2 is a hydrogen, a C1-25 hydrocarbyl group, or a halogen, and wherein the method comprises dissolving a crude phthalimidine compound in an aqueous base solution; precipitating the dissolved, crude phthalimidine compound from the aqueous base solution by adding an acid in an amount effective to lower the pH of the solution to 9.0 to 12.0, to provide a semicrude phthalimidine compound; and isolating the semicrude phthalimidine compound from the aqueous base solution, to provide the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I), and having a phenolphthalein compound content of less than 2,500 ppm, based on the weight of the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine.
    Type: Application
    Filed: July 13, 2012
    Publication date: December 6, 2012
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V.
    Inventors: Venkata Rama Narayanan Ganapathy BHOTLA, Balakrishnan GANESAN, Kishan GURRAM, Salkod Parameshwar MALLIKA, Kumar Arun SATYANARAYANA, Swaminathan SHUBASHREE
  • Publication number: 20120284702
    Abstract: Installation data associated with a hardware device is obtained (e.g., at the time the device is installed on a computing device). Identifiers of applications that are allowed to access a capability of the hardware device are identified from the installation data and stored in a device permissions record as being allowed to access the capability of the hardware device. Subsequently, a request to access the capability of the hardware device is received from an application. A check is made as to whether the application is identified in a device permissions record as being allowed to access the capability of the hardware device. The application is allowed to access the capability of the hardware device if the device permissions record indicates the application is allowed to access the capability of the hardware device, and otherwise the request from the application is denied.
    Type: Application
    Filed: May 2, 2011
    Publication date: November 8, 2012
    Applicant: MICROSOFT CORPORATION
    Inventors: Narayanan Ganapathy, Max G. Morris, Paul Sliwowicz, Darren R. Davis, George Evangelos Roussos
  • Patent number: 8247523
    Abstract: Disclosed herein is a method for producing a purified 2-aryl-3,3-bis(4-hydroxyaryl) phthalimidine of formula (I) wherein R1 is hydrogen or a C1-25 hydrocarbyl group and R2 is a hydrogen, a C1-25 hydrocarbyl group, or a halogen, and wherein the method comprises dissolving a crude phthalimidine compound in an aqueous base solution; precipitating the dissolved, crude phthalimidine compound from the aqueous base solution by adding an acid in an amount effective to lower the pH of the solution to 9.0 to 12.0, to provide a semicrude phthalimidine compound; and isolating the semicrude phthalimidine compound from the aqueous base solution, to provide the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I), and having a phenolphthalein compound content of less than 2,500 ppm, based on the weight of the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: August 21, 2012
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Venkata Rama Narayanan Ganapathy Bhotla, Balakrishnan Ganesan, Kishan Gurram, Salkod Parameshwar Mallika, Kumar Arun Satyanarayana, Swaminathan Shubashree
  • Patent number: 8099761
    Abstract: A technique that enables a portable device to be automatically associated with a plurality of computers. Information that a computer can use to authenticate a portable device and establish a trusted relationship prior to creating an association with the portable device is created and stored in a data store that is accessible by a plurality of computers and is associated with a user of the portable device. When a computer discovers such a portable device with which it is not yet associated, the computer can identify a user logged into the computer and use information identifying the user to retrieve authentication information that is device independent and is expected to be presented by the portable device to authenticate it and allow automatic association.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: January 17, 2012
    Assignee: Microsoft Corporation
    Inventor: Narayanan Ganapathy
  • Patent number: 8074205
    Abstract: A binary is received at a binary verification service from a binary verification client agent. The binary verification service performs binary verification of the binary, wherein binary verification includes determining whether the binary is complicit with a set of usage rules. The binary verification service sends a binary verification result to the binary verification client agent.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: December 6, 2011
    Assignee: Microsoft Corporation
    Inventors: Shankara M. C. Shastry, Perraju Bendapudi, Narayanan Ganapathy, Vladimir A. Levin
  • Publication number: 20110225640
    Abstract: Device information for each of multiple devices associated with a user account is maintained by a cloud service. The device information can include credential information allowing the device to be accessed by other ones of the multiple devices, remote access information indicating how the device can be accessed by other ones of the multiple devices on other networks, and property information including settings and/or device drivers for the device. The device information for each of the multiple devices is made available to other ones of the multiple devices, and can be used by the multiple devices to access one another and provide a consistent user experience across the multiple devices.
    Type: Application
    Filed: May 23, 2011
    Publication date: September 15, 2011
    Applicant: MICROSOFT CORPORATION
    Inventors: Narayanan Ganapathy, Esaias E. Greeff
  • Patent number: 7915430
    Abstract: A method of producing a phenolphthalein comprises reacting a phenolic compound of the formula: wherein R1 is a hydrogen or a C1-C12 hydrocarbyl group, with a phthalic anhydride compound of the formula: wherein R2 is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen, in the presence of a heterogeneous catalyst and a promoter to form a reaction mixture comprising a phenolphthalein compound of the formula: wherein each R1 is independently a hydrogen or a C1-C12 hydrocarbyl group, and R2 is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen; wherein the heterogeneous catalyst comprises a metal oxide composition in combination with a porous support, wherein the metal is molybdenum, tungsten, or a combination comprising at least one of the foregoing metals.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: March 29, 2011
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Venkata Rama Narayanan Ganapathy Bhotla, Shivappa Basappa Halligudi, Gurram Kishan, Salkod Parameshwar Mallika, Bhaskar Veldurthy
  • Patent number: 7868190
    Abstract: A method for producing a phenolphthalein compound comprises: reacting a phenolic compound of the formula: wherein R1 is a hydrogen or a C1-C12 hydrocarbyl group, with a phthalic anhydride compound of the formula: wherein R2 is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen, in the presence of a heterogeneous catalyst and a promoter to form a reaction mixture comprising a phenolphthalein compound of the formula: wherein each R1 is independently a hydrogen or a C1-C12 hydrocarbyl group; and R2 is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen; wherein the heterogeneous catalyst comprises, on a porous support, a calcination product of a heteropolyacid composition.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: January 11, 2011
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Venkata Rama Narayanan Ganapathy Bhotla, Shivappa Basappa Halligudi, Gurram Kishan, Salkod Parameshwar Mallika, Bhaskar Veldurthy
  • Patent number: 7838689
    Abstract: A method for producing a phenolphthalein compound is disclosed, comprising: reacting a phenolic compound of the formula: wherein Ra is a hydrogen or a C1-C12 hydrocarbyl group, with a phthalic anhydride compound of the formula: wherein Rb is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen, in the presence of an ionic liquid catalyst composition and a promoter to form a reaction mixture comprising a phenolphthalein compound of the formula: wherein each Ra is independently a hydrogen or a C1-C12 hydrocarbyl group, and Rb is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen; wherein the ionic liquid catalyst composition comprises a combination of an ionic liquid and a metal halide wherein the metal is selected from the group consisting of a Group IIB, IIIA, VIII, or IVA metal, and a combination thereof.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: November 23, 2010
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Venkata Rama Narayanan Ganapathy Bhotla, Dwairath Dhar, Gurram Kishan, Salkod Parameshwar Mallika
  • Patent number: 7790832
    Abstract: A method for purifying a 2-aryl-3,3-bis(hydroxyaryl)phthalimidine comprises contacting a crude 2-aryl-3,3-bis(hydroxyaryl)phthalimidine with a purification agent, removing a 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound from the crude 2-aryl-3,3-bis(hydroxyaryl)phthalimidine, and producing a purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidine product comprising less than 200 parts per million of the 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound. The purification agent is selected from the group consisting of an acidic material, an organic acid chloride, an organic anhydride, or a combination thereof. The 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound has a formula: wherein each R1 is independently selected from a group consisting of a hydrocarbyl radical, a nitro radical, and a halogen atom; “a” is an integer from 0 to 4; and Ar1 and Ar2 are independently at each occurrence an aromatic radical.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: September 7, 2010
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Balakrishnan Ganesan, Pradeep Jeevaji Nadkarni, Kumar Arun Satyanarayana, Venkata Rama Narayanan Ganapathy Bhotla, Suresh Shanumgam, Gurram Kishan, Ravindra Vikram Singh
  • Publication number: 20100152416
    Abstract: Disclosed herein is a method for producing a purified 2-aryl-3,3-bis(4-hydroxyaryl) phthalimidine of formula (I) wherein R1 is hydrogen or a C1-25 hydrocarbyl group and R2 is a hydrogen, a C1-25 hydrocarbyl group, or a halogen, and wherein the method comprises dissolving a crude phthalimidine compound in an aqueous base solution; precipitating the dissolved, crude phthalimidine compound from the aqueous base solution by adding an acid in an amount effective to lower the pH of the solution to 9.0 to 12.0, to provide a semicrude phthalimidine compound; and isolating the semicrude phthalimidine compound from the aqueous base solution, to provide the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I), and having a phenolphthalein compound content of less than 2,500 ppm, based on the weight of the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 17, 2010
    Inventors: Venkata Rama Narayanan Ganapathy BHOTLA, Balakrishnan GANESAN, Kishan Gurram, Salkod Parameshwar MALLIKA, Kumar Arun Satyanarayana, Swaminathan SHUBASHREE
  • Publication number: 20100081831
    Abstract: A method for producing a phenolphthalein compound is disclosed, comprising: reacting a phenolic compound of the formula: wherein Ra is a hydrogen or a C1-C12 hydrocarbyl group, with a phthalic anhydride compound of the formula: wherein Rb is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen, in the presence of an ionic liquid catalyst composition and a promoter to form a reaction mixture comprising a phenolphthalein compound of the formula: wherein each Ra is independently a hydrogen or a C1-C12 hydrocarbyl group, and Rb is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen; wherein the ionic liquid catalyst composition comprises a combination of an ionic liquid and a metal halide wherein the metal is selected from the group consisting of a Group IIB, IIIA, VIII, or IVA metal, and a combination thereof
    Type: Application
    Filed: September 29, 2008
    Publication date: April 1, 2010
    Inventors: Venkata Rama Narayanan Ganapathy BHOTLA, Dwairath DHAR, Gurram KISHAN, Salkod Parameshwar MALLIKA
  • Publication number: 20100081828
    Abstract: A method of producing a phenolphthalein comprises reacting a phenolic compound of the formula: wherein R1 is a hydrogen or a C1-C12 hydrocarbyl group, with a phthalic anhydride compound of the formula: wherein R2 is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen, in the presence of a heterogeneous catalyst and a promoter to form a reaction mixture comprising a phenolphthalein compound of the formula: wherein each R1 is independently a hydrogen or a C1-C12 hydrocarbyl group, and R2 is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen; wherein the heterogeneous catalyst comprises a metal oxide composition in combination with a porous support, wherein the metal is molybdenum, tungsten, or a combination comprising at least one of the foregoing metals.
    Type: Application
    Filed: September 29, 2008
    Publication date: April 1, 2010
    Inventors: Venkata Rama Narayanan Ganapathy BHOTLA, Shivappa Basappa HALLIGUDI, Gurram KISHAN, Salkod Parameshwar MALLIKA, Bhaskar VELDURTHY
  • Publication number: 20100081829
    Abstract: A method for producing a phenolphthalein compound comprises: reacting a phenolic compound of the formula: wherein R1 is a hydrogen or a C1-C12 hydrocarbyl group, with a phthalic anhydride compound of the formula: wherein R2 is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen, in the presence of a heterogeneous catalyst and a promoter to form a reaction mixture comprising a phenolphthalein compound of the formula: wherein each R1 is independently a hydrogen or a C1-C12 hydrocarbyl group; and R2 is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen; wherein the heterogeneous catalyst comprises, on a porous support, a calcination product of a heteropolyacid composition.
    Type: Application
    Filed: September 29, 2008
    Publication date: April 1, 2010
    Inventors: Venkata Rama Narayanan Ganapathy BHOTLA, Shivappa Basappa HALLIGUDI, Gurram KISHAN, Salkod Parameshwar MALLIKA, Bhaskar VELDURTHY