Patents by Inventor Rajappan Vetrivel

Rajappan Vetrivel 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: 8440732
    Abstract: A foamable polymeric composition can comprise a polymer, a blowing agent cage material, and a blowing agent. The blowing agent cage material is selected from the group consisting of zeolite imidazolate framework, metal organic framework, carbon cage structure, and combinations comprising at least one of the foregoing. In one embodiment, the composition can be formed by mixing the polymer with the blowing agent cage material to form a mixture, introducing a blowing agent to the mixture, and forming the mixture into pellets.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: May 14, 2013
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Santhosh Kumar Rajendran, Vikash Kumar Sinha, Ravi Sriraman, Chinniah Thiagarajan, Rajappan Vetrivel
  • Patent number: 7811359
    Abstract: A membrane and method for separating carbon dioxide from a mixture of gases, where the membrane includes expanded polytetrafluoroethylene and polysiloxane. The membrane is highly stable and can separate carbon dioxide at high flux in harsh environments and high temperatures, such as exhaust gases from power plants.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: October 12, 2010
    Assignee: General Electric Company
    Inventors: Kunj Tandon, Umakant Rapol, Ullash Kumar Barik, Rajappan Vetrivel
  • Publication number: 20090247654
    Abstract: A foamable polymeric composition can comprise a polymer, a blowing agent cage material, and a blowing agent. The blowing agent cage material is selected from the group consisting of zeolite imidazolate framework, metal organic framework, carbon cage structure, and combinations comprising at least one of the foregoing. In one embodiment, the composition can be formed by mixing the polymer with the blowing agent cage material to form a mixture, introducing a blowing agent to the mixture, and forming the mixture into pellets.
    Type: Application
    Filed: March 25, 2008
    Publication date: October 1, 2009
    Inventors: Santhosh Kumar Rajendran, Vikash Kumar Sinha, Ravi Sriraman, Chinniah Thiagarajan, Rajappan Vetrivel
  • Patent number: 7473752
    Abstract: Disclosed herein are silicone resins comprising structural units of the formula: and at least one structural unit selected from the group consisting of: where “A” is a spacer group comprising C2 to C50 alkyl groups; “B” and “C” are spacer groups comprising C2 to C20 alkyl groups; “M1” comprises a Group III element,; R1, R3, R6, and R7 independently comprise OH, alkyl groups, or alkoxy groups; R2 and R4 independently comprise hydrogen, alkali metal, or alkyl groups; and R5 comprises a alkyl group. Methods for preparing these silicone resins are also disclosed. The silicone resins are useful as catalysts for producing bisphenols.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: January 6, 2009
    Assignee: SABIC Innovative Plastics IP B.V.
    Inventors: Gurram Kishan, Rajappan Vetrivel, Nileshkumar Prakash Kukalyekar, Adil Minoo Dhalla
  • Publication number: 20080173179
    Abstract: A membrane and method for separating carbon dioxide from a mixture of gases, where the membrane includes expanded polytetrafluoroethylene and polysiloxane. The membrane is highly stable and can separate carbon dioxide at high flux in harsh environments and high temperatures, such as exhaust gases from power plants.
    Type: Application
    Filed: January 18, 2007
    Publication date: July 24, 2008
    Inventors: Kunj Tandon, Umakant Rapol, Ullash Kumar Barik, Rajappan Vetrivel
  • Publication number: 20070135661
    Abstract: Disclosed herein are silicone resins comprising structural units of the formulae: and at least one structural unit selected from the group consisting of: where “A” is a spacer group comprising C2 to C50 alkyl groups; “B” and “C” are spacer groups comprising C2 to C20 alkyl groups; “M1” comprises a Group III element,; R1, R3, R6, and R7 independently comprise OH, alkyl groups, or alkoxy groups; R2 and R4 independently comprise hydrogen, alkali metal, or alkyl groups; and R5 comprises a alkyl group. Methods for preparing these silicone resins are also disclosed. The silicone resins are useful as catalysts for producing bisphenols.
    Type: Application
    Filed: February 5, 2007
    Publication date: June 14, 2007
    Inventors: Gurram Kishan, Rajappan Vetrivel, Nileshkumar Kukalyekar, Adil Dhalla
  • Patent number: 7193027
    Abstract: Disclosed herein are silicone resins comprising structural units of the formulae: and at least one structural unit selected from the group consisting of: where “A” is a spacer group comprising C2 to C50 alkyl groups; “B” and “C” are spacer groups comprising C2 to C20 alkyl groups; “M1” comprises a Group III element; R1, R3, R6, and R7 independently comprise OH, alkyl groups, or alkoxy groups; R2 and R4 independently comprise hydrogen, alkali metal, or alkyl groups; and R5 comprises a alkyl group. Methods for preparing these silicone resins are also disclosed. The silicone resins are useful as catalysts for producing bisphenols.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: March 20, 2007
    Assignee: General Electric Company
    Inventors: Gurram Kishan, Rajappan Vetrivel, Nileshkumar Prakash Kukalyekar, Adil Minoo Dhalla
  • Publication number: 20060293169
    Abstract: A porous nanozeolite material having a first dimension less than about 1 micron and a second dimension less than about 100 microns. The nanozeolite material comprises pores having an average diameter less than about 50 nm. A method of making microporous nanozeolites is provided. The method comprises the steps of providing an aqueous solution comprising at least one nanozeolite precursor material or zeolite particles, and electrospinning the aqueous solution onto a substrate to form an electrospun material. The electrospun material comprises microporous nanozeolites. A method of making mesoporous nanozeolites is also provided. The method comprises the step of providing an aqueous solution comprising a nanozeolite precursor material and at least one structure directing agent, and electrospinning the aqueous solution onto a substrate to form an electrospun mesoporous nanozeolite material. A gas sensor device is provided. The device comprises nanozeolite sensing material.
    Type: Application
    Filed: July 8, 2005
    Publication date: December 28, 2006
    Inventors: Duraiswamy Srinivasan, Anis Zribi, Rashmi Rao, Rajappan Vetrivel
  • Patent number: 7041774
    Abstract: Disclosed herein are zeolite compositions comprising structural units of the formulae: wherein “B” and “C” are spacer groups comprising C2 to C20 hydrocarbyl groups; and R1 and R2 independently of each other comprise alkali metal, hydrogen, or C1 to C20 alkyl groups. The zeolite compositions further comprise structural units derived from a heteropolyacid compound of the formula: (M3)3(M4)(M5)12O40; where M3 comprises hydrogen or an alkali metal; M4 comprises phosphorus or silicon, and M5 comprises tungsten or molybdenum. Methods for preparing these zeolite compositions are also disclosed. The zeolite compositions are useful as catalysts for producing bisphenols.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: May 9, 2006
    Assignee: General Electric Company
    Inventors: Gurram Kishan, Rajappan Vetrivel, Nileshkumar Prakash Kukalyekar, Adil Minoo Dhalla, Jonathan L. Male, James L. Spivack, Arumugamangalam Venkataraman Ramaswamy, Anand Pal Singh
  • Publication number: 20050070423
    Abstract: Disclosed herein are zeolite compositions comprising structural units of the formulae: wherein “B” and “C” are spacer groups comprising C2 to C20 hydrocarbyl groups; and R1 and R2 independently of each other comprise alkali metal, hydrogen, or C1 to C20 alkyl groups. The zeolite compositions further comprise structural units derived from a heteropolyacid compound of the formula: (M3)3(M4)(M5)12O40; where M3 comprises hydrogen or an alkali metal; M4 comprises phosphorus or silicon, and M5 comprises tungsten or molybdenum. Methods for preparing these zeolite compositions are also disclosed. The zeolite compositions are useful as catalysts for producing bisphenols.
    Type: Application
    Filed: September 30, 2003
    Publication date: March 31, 2005
    Inventors: Gurram Kishan, Rajappan Vetrivel, Nileshkumar Kukalyekar, Adil Dhalla, Jonathan Male, James Spivack, Arumugamangalam Ramaswamy, Anand Singh
  • Publication number: 20050033002
    Abstract: Disclosed herein are silicone resins comprising structural units of the formulae: and at least one structural unit selected from the group consisting of: where “A” is a spacer group comprising C2 to C50 alkyl groups; “B” and “C” are spacer groups comprising C2 to C20 alkyl groups; “M1” comprises a Group III element; R1, R3, R6, and R7 independently comprise OH, alkyl groups, or alkoxy groups; R2 and R4 independently comprise hydrogen, alkali metal, or alkyl groups; and R5 comprises a alkyl group. Methods for preparing these silicone resins are also disclosed. The silicone resins are useful as catalysts for producing bisphenols.
    Type: Application
    Filed: August 8, 2003
    Publication date: February 10, 2005
    Inventors: Gurram Kishan, Rajappan Vetrivel, Nileshkumar Kukalyekar, Adil Dhalla