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).
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Patent number: 11912953Abstract: 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: GrantFiled: July 8, 2020Date of Patent: February 27, 2024Assignee: Petroliam Nasional Berhad (Petronas)Inventors: Kuah Y. Cheun, Andrea Dolfi, Giuseppe Forastiero, Geetha Srinivasan, Farah Fazlina M Yasin
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Publication number: 20240006625Abstract: 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: ApplicationFiled: November 18, 2021Publication date: January 4, 2024Applicants: PETROLIAM NASIONAL BERHAD (PETRONAS), Universiti Kebangsaan MalaysiaInventors: Husaini TEUKU, Mohd Shahbudin MASTAR @ MASDAR, Geetha SRINIVASAN, Safwan Hanis Bin MOHD MURAD, Colin PATRICK, Siti Sara Lyana Binti BADLY SHAM
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Patent number: 11613708Abstract: 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: GrantFiled: August 1, 2018Date of Patent: March 28, 2023Assignee: 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
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Publication number: 20220290067Abstract: 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: ApplicationFiled: July 8, 2020Publication date: September 15, 2022Inventors: Kuah Y. Cheun, Andrea Dolfi, Giuseppe Forastiero, Geetha Srinivasan, Farah Fazlina M Yasin
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Patent number: 11065577Abstract: 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: GrantFiled: August 1, 2018Date of Patent: July 20, 2021Assignee: 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
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Publication number: 20200238214Abstract: 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: ApplicationFiled: August 1, 2018Publication date: July 30, 2020Inventors: KENNETH SEDDON, GEETHA SRINIVASAN, MOHAMMAD SYAMZARI RAFEEN, KUAH YONG CHEUN, AMIRUDDIN HASSAN, ADI AIZAT RAZALI, SHARIZAL M. AZAM SHAH WONG
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Publication number: 20200239786Abstract: 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: ApplicationFiled: August 1, 2018Publication date: July 30, 2020Inventors: KENNETH SEDDON, GEETHA SRINIVASAN, MOHAMMAD SYAMZARI RAFEEN, KUAH YONG CHEUN, AMIRUDDIN HASSAN, ADI AIZAT RAZALI, SHARIZAL M. AZAM SHAH WONG
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Patent number: 10138432Abstract: 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: GrantFiled: August 18, 2016Date of Patent: November 27, 2018Assignee: THE QUEEN'S UNIVERSITY OF BELFASTInventors: Mahpuzah Abai, Martin P. Atkins, Kuah Y. Cheun, John Holbrey, Peter Nockemann, Kenneth R. Seddon, Geetha Srinivasan, Yiran Zou
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Publication number: 20170037323Abstract: 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: ApplicationFiled: August 18, 2016Publication date: February 9, 2017Inventors: Mahpuzah Abai, Martin P. Atkins, Kuah Y. Cheun, John Holbrey, Peter Nockemann, Kenneth R. Seddon, Geetha Srinivasan, Yiran Zou
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Patent number: 9447335Abstract: 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: GrantFiled: October 5, 2011Date of Patent: September 20, 2016Assignee: The Queen's University of BelfastInventors: Mahpuzah Abai, Martin P. Atkins, Kuah Y. Cheun, John Holbrey, Peter Nockemann, Ken Seddon, Geetha Srinivasan, Yiran Zou
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Publication number: 20140001100Abstract: 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: ApplicationFiled: October 5, 2011Publication date: January 2, 2014Applicant: The Queen's University of BelfastInventors: Mahpuzah Abai, Martin P. Atkins, Kuah Y. Cheun, John Holbrey, Peter Nockemann, Ken Seddon, Geetha Srinivasan, Yiran Zou
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Method for monitoring a knock control, and device for knock control of an internal combustion engine
Patent number: 7630825Abstract: 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: GrantFiled: November 14, 2007Date of Patent: December 8, 2009Assignee: Robert Bosch GmbHInventors: Oskar Torno, Carsten Kluth, Werner Haeming, Taskin Ege, Federico Buganza, Erkan Danisman, Geetha Srinivasan -
Method for monitoring a knock control, and device for knock control of an internal combustion engine
Publication number: 20080167792Abstract: 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: ApplicationFiled: November 14, 2007Publication date: July 10, 2008Inventors: Oskar Torno, Carsten Kluth, Werner Haeming, Taskin Ege, Federico Buganza, Erkan Danisman, Geetha Srinivasan