Patents by Inventor Geetha Srinivasan

Geetha Srinivasan 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: 11912953
    Abstract: The present invention relates to additives for reducing friction and wear in lubricants. In particular, the present invention relates to novel salts and their use in lubricating oil compositions for reducing friction and wear. In particular, the present invention relates to one or more ionic liquids, wherein the one or more ionic liquids comprise one or more cations and one or more Group 6 metal mononuclear metallate anions.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: February 27, 2024
    Assignee: Petroliam Nasional Berhad (Petronas)
    Inventors: Kuah Y. Cheun, Andrea Dolfi, Giuseppe Forastiero, Geetha Srinivasan, Farah Fazlina M Yasin
  • Publication number: 20240006625
    Abstract: A flow-field plate (101) for a polymer electrolyte membrane device such as an electrolyser or a fuel cell comprising an inlet on one side (102) of the plate and 5 an outlet (103) on the opposite side, a distribution array (110) including a plurality of linear channels (106), a first interface (104) between the inlet (102) and distribution array (110) and a second interface (105) between the distribution array (110) and the outlet (103), wherein each interface includes up to rn rows of baffles (107), where rn=the width of the interface hd divided by the baffle diameter hb, the 10 majority of the baffles in each row being set at a particular angle relative to the longitudinal axis of the linear channels (106).
    Type: Application
    Filed: November 18, 2021
    Publication date: January 4, 2024
    Applicants: PETROLIAM NASIONAL BERHAD (PETRONAS), Universiti Kebangsaan Malaysia
    Inventors: Husaini TEUKU, Mohd Shahbudin MASTAR @ MASDAR, Geetha SRINIVASAN, Safwan Hanis Bin MOHD MURAD, Colin PATRICK, Siti Sara Lyana Binti BADLY SHAM
  • Patent number: 11613708
    Abstract: Copper sulfide of the formula CuxSy, wherein x and y are integer or non-integer values, wherein (i) the copper sulfide has a sulfur 2p XPS spectrum with peaks at 162.3 eV (±1 ev), 163.8 eV (±1 ev) and 68.5 eV (±1 ev), characterised in that the peak at 168.5 eV has a lower value of counts per second (CPS) than both the peak at 162.3 eV and the peak at 163.8 eV; and (ii) the copper sulfide has a copper 2p XPS spectrum with peaks at 932.0 eV (±2 ev) and 933.6 eV (±3 eV) and characterised in that the XPS spectrum does not comprise identifiable satellite peaks at 939.8 eV and 943.1 eV (±3 eV).
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: March 28, 2023
    Assignee: PETROLIAM NASIONAL BERHAD (PETRONAS)
    Inventors: Kenneth Seddon, Geetha Srinivasan, Mohammad Syamzari Rafeen, Kuah Yong Cheun, Amiruddin Hassan, Adi Aizat Razali, Sharizal Bin Mohd Azam Shah Wong
  • Publication number: 20220290067
    Abstract: The present invention relates to additives for reducing friction and wear in lubricants. In particular, the present invention relates to novel salts and their use in lubricating oil compositions for reducing friction and wear. In particular, the present invention relates to one or more ionic liquids, wherein the one or more ionic liquids comprise one or more cations and one or more Group 6 metal mononuclear metallate anions.
    Type: Application
    Filed: July 8, 2020
    Publication date: September 15, 2022
    Inventors: Kuah Y. Cheun, Andrea Dolfi, Giuseppe Forastiero, Geetha Srinivasan, Farah Fazlina M Yasin
  • Patent number: 11065577
    Abstract: A process for preparing a copper sulfide of the formula CuxSy, wherein the process comprises the following steps: (i) reacting an aqueous solution of a copper salt with a molar excess of a sulfiding agent so as to precipitate copper sulfide from the solution; (ii) isolating the copper sulfide precipitate from the reaction mixture; and (iii) drying the copper sulfide precipitate at a temperature of less than 100° C., wherein x and y are integer or non-integer values.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: July 20, 2021
    Assignee: Petroliam Nasional Berhad (Petronas)
    Inventors: Kenneth Seddon, Geetha Srinivasan, Mohammad Syamzari Rafeen, Kuah Yong Cheun, Amiruddin Hassan, Adi Aizat Razali, Sharizal Bin Mohd Azam Shah Wong
  • Publication number: 20200238214
    Abstract: A process for preparing a copper sulfide of the formula CuxSy, wherein the process comprises the following steps: (i) reacting an aqueous solution of a copper salt with a molar excess of a sulfiding agent so as to precipitate copper sulfide from the solution; (ii) isolating the copper sulfide precipitate from the reaction mixture; and (iii) drying the copper sulfide precipitate at a temperature of less than 100° C., wherein x and y are integer or non-integer values.
    Type: Application
    Filed: August 1, 2018
    Publication date: July 30, 2020
    Inventors: KENNETH SEDDON, GEETHA SRINIVASAN, MOHAMMAD SYAMZARI RAFEEN, KUAH YONG CHEUN, AMIRUDDIN HASSAN, ADI AIZAT RAZALI, SHARIZAL M. AZAM SHAH WONG
  • Publication number: 20200239786
    Abstract: Copper sulfide of the formula CuxSy, wherein x and y are integer or non-integer values, wherein (i) the copper sulfide has a sulfur 2p XPS spectrum with peaks at 162.3 eV (±1 ev), 163.8 eV (±1 ev) and 68.5 eV (±1 ev), characterised in that the peak at 168.5 eV has a lower value of counts per second (CPS) than both the peak at 162.3 eV and the peak at 163.8 eV; and (ii) the copper sulfide has a copper 2p XPS spectrum with peaks at 932.0 eV (±2ev) and 933.6 eV (±3eV) and characterised in that the XPS spectrum does not comprise identifiable satellite peaks at 939.8 eV and 943.1 eV (±3 eV).
    Type: Application
    Filed: August 1, 2018
    Publication date: July 30, 2020
    Inventors: KENNETH SEDDON, GEETHA SRINIVASAN, MOHAMMAD SYAMZARI RAFEEN, KUAH YONG CHEUN, AMIRUDDIN HASSAN, ADI AIZAT RAZALI, SHARIZAL M. AZAM SHAH WONG
  • Patent number: 10138432
    Abstract: Mercury is removed from a mercury-containing hydrocarbon fluid feed by utilizing ionic liquids. The mercury-containing hydrocarbon fluid feed is contacted with a metallate salt immobilized on a solid support material. A hydrocarbon fluid product having a reduced mercury content compared to the mercury-containing fluid feed is separated from the ionic liquid.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: November 27, 2018
    Assignee: THE QUEEN'S UNIVERSITY OF BELFAST
    Inventors: Mahpuzah Abai, Martin P. Atkins, Kuah Y. Cheun, John Holbrey, Peter Nockemann, Kenneth R. Seddon, Geetha Srinivasan, Yiran Zou
  • Publication number: 20170037323
    Abstract: Mercury is removed from a mercury-containing hydrocarbon fluid feed by utilizing ionic liquids. The mercury-containing hydrocarbon fluid feed is contacted with a metallate salt immobilized on a solid support material. A hydrocarbon fluid product having a reduced mercury content compared to the mercury-containing fluid feed is separated from the ionic liquid.
    Type: Application
    Filed: August 18, 2016
    Publication date: February 9, 2017
    Inventors: Mahpuzah Abai, Martin P. Atkins, Kuah Y. Cheun, John Holbrey, Peter Nockemann, Kenneth R. Seddon, Geetha Srinivasan, Yiran Zou
  • Patent number: 9447335
    Abstract: The present invention relates to a process for the removal of mercury from a mercury-containing hydrocarbon fluid feed using specifically selected ionic liquids comprising, contacting the mercury-containing hydrocarbon fluid feed with an ionic liquid having the formula [Cat+][M+][X?] and separating from the ionic liquid a hydrocarbon fluid product having a reduced mercury content compared to the mercury-containing fluid feed.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: September 20, 2016
    Assignee: The Queen's University of Belfast
    Inventors: Mahpuzah Abai, Martin P. Atkins, Kuah Y. Cheun, John Holbrey, Peter Nockemann, Ken Seddon, Geetha Srinivasan, Yiran Zou
  • Publication number: 20140001100
    Abstract: The present invention relates to a process for the removal of mercury from a mercury-containing hydrocarbon fluid feed using specifically selected ionic liquids comprising, contacting the mercury-containing hydrocarbon fluid feed with an ionic liquid having the formula [Cat+][M+][X?] and separating from the ionic liquid a hydrocarbon fluid product having a reduced mercury content compared to the mercury-containing fluid feed.
    Type: Application
    Filed: October 5, 2011
    Publication date: January 2, 2014
    Applicant: The Queen's University of Belfast
    Inventors: Mahpuzah Abai, Martin P. Atkins, Kuah Y. Cheun, John Holbrey, Peter Nockemann, Ken Seddon, Geetha Srinivasan, Yiran Zou
  • Patent number: 7630825
    Abstract: A method for monitoring a knock control and a device for knock control of an internal combustion engine are provided, in which digital knock data are obtained for the knock control in that the acquisition of data of a knock sensor, converted from analog to digital, is started at a start angle of the internal combustion engine and ended at an end angle. The digital knock data are evaluated so as to detect a malfunction in the acquisition of the digital knock data.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: December 8, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Oskar Torno, Carsten Kluth, Werner Haeming, Taskin Ege, Federico Buganza, Erkan Danisman, Geetha Srinivasan
  • Publication number: 20080167792
    Abstract: A method for monitoring a knock control and a device for knock control of an internal combustion engine are provided, in which digital knock data are obtained for the knock control in that the acquisition of data of a knock sensor, converted from analog to digital, is started at a start angle of the internal combustion engine and ended at an end angle. The digital knock data are evaluated so as to detect a malfunction in the acquisition of the digital knock data.
    Type: Application
    Filed: November 14, 2007
    Publication date: July 10, 2008
    Inventors: Oskar Torno, Carsten Kluth, Werner Haeming, Taskin Ege, Federico Buganza, Erkan Danisman, Geetha Srinivasan