Patents by Inventor Venugopal Menon
Venugopal Menon 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: 11794184Abstract: The present disclosure provides a device for patterning extracellular matrix (ECM) hydrogel comprising a first layer surface patterned to define a microchannel, a second layer comprising a loading channel in fluid communication with loading ports to receive an ECM hydrogel, wherein the first layer is attached over the second layer such that the patterned surface faces the loading channel to define an open chamber with regions of reduced cross-sectional area, and wherein the ECM hydrogel is confined to fill said regions, thereby forming a perfusable channel in the open chamber. The present disclosure also provides the same device wherein the second layer is a substrate without a loading channel and is optically pervious; and additionally provides a method of patterning ECM hydrogel comprising use of the aforementioned device. Importantly, ECM patterning is achieved by surface tension between the ECM hydrogel and the first layer at the boundaries of the microchannel.Type: GrantFiled: September 29, 2017Date of Patent: October 24, 2023Assignee: NANYANG TECHNOLOGICAL UNIVERSITYInventors: Han Wei Hou, Nishanth Venugopal Menon, Soon Nan Wee, King Ho Holden Li
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Publication number: 20230234050Abstract: A microfluidic chip is disclosed herein. In a specific embodiment, the microfluidic chip comprises at least one microfluidic reservoir having a wall portion and a heat transfer sealing layer cooperating with the wall portion for receiving a sample to be tested. The heat transfer sealing layer is arranged to be contiguous with the sample to be tested. The microfluidic chip further comprises an active temperature control device arranged to provide structural support to the heat transfer sealing layer and operable to control a temperature of the sample via transmission of heat through the heat transfer sealing layer. A detection module is also disclosed.Type: ApplicationFiled: May 27, 2021Publication date: July 27, 2023Inventors: Chwee Teck LIM, Quoc Mai Phuong NGUYEN, Yongling Adelicia LI, Ming WANG, Nishanth VENUGOPAL MENON, Minru Gordon XIONG, Ali Asgar SALEEM BHAGAT, Jee Chin TEOH
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Publication number: 20190217291Abstract: The present disclosure provides a device for patterning extracellular matrix (ECM) hydrogel comprising a first layer surface patterned to define a microchannel, a second layer comprising a loading channel in fluid communication with loading ports to receive an ECM hydrogel, wherein the first layer is attached over the second layer such that the patterned surface faces the loading channel to define an open chamber with regions of reduced cross-sectional area, and wherein the ECM hydrogel is confined to fill said regions, thereby forming a perfusable channel in the open chamber. The present disclosure also provides the same device wherein the second layer is a substrate without a loading channel and is optically pervious; and additionally provides a method of patterning ECM hydrogel comprising use of the aforementioned device. Importantly, ECM patterning is achieved by surface tension between the ECM hydrogel and the first layer at the boundaries of the microchannel.Type: ApplicationFiled: September 29, 2017Publication date: July 18, 2019Inventors: Han Wei HOU, Nishanth VENUGOPAL MENON, Soon Nan WEE, King Ho Holden LI
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Patent number: 9382850Abstract: A system includes a gas turbine engine having a combustor, and a fuel blending system. The fuel blending system further includes a first fuel supply configured to supply a first fuel, a second fuel supply configured to supply a second fuel, a first fuel circuit, a second fuel circuit, and a controller. The first fuel circuit may be configured to blend the first fuel and the second fuel to form a first to form a first fuel mixture. The second fuel circuit may be configured to blend the first fuel and the second fuel to form a second fuel mixture. The controller may be configured to regulate blending of the first fuel mixture and the second fuel mixture based on a measured operating parameter of the combustor.Type: GrantFiled: March 21, 2013Date of Patent: July 5, 2016Assignee: General Electric CompanyInventors: Arvind Venugopal Menon, Alan Meier Truesdale, Abhijit Prabhakar Kulkarni, Predrag Popovic
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Patent number: 9377202Abstract: A system includes a gas turbine engine having a combustor, and a fuel blending system. The fuel blending system further includes a first fuel supply configured to supply a first fuel, a second fuel supply configured to supply a second fuel, a first fuel circuit, a second fuel circuit, and a controller. The first fuel circuit may be configured to blend the first fuel and the second fuel to form a first fuel mixture. The second fuel circuit may be configured to blend the first fuel and the second fuel to form a second fuel mixture. The controller may be configured to regulate blending of the first fuel mixture and the second fuel mixture based on a measured composition of the first fuel.Type: GrantFiled: March 15, 2013Date of Patent: June 28, 2016Assignee: General Electric CompanyInventors: Arvind Venugopal Menon, Alan Meier Truesdale, Abhijit Prabhakar Kulkarni, Predrag Popovic
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Publication number: 20160068777Abstract: A system, method, and computer-readable medium for blending a fuel for use in a gas turbine are disclosed. A measurement of a heating value of a process gas and a measurement of a molecular weight of the process gas is obtained. An estimate of a composition of the process gas is obtained using the obtained measurement of the heating value and the obtained measurement of the molecular weight. A blending ratio of the process gas and a natural gas is selected based on the estimate of the composition of the process gas. The process gas and the natural gas are then blended according to the selected blending ratio to obtain a fuel mixture for use in the gas turbine.Type: ApplicationFiled: September 5, 2014Publication date: March 10, 2016Inventors: Arvind Venugopal Menon, Abhijit Prabhakar Kulkarni, Predrag Popovic, Alan Meier Truesdale
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Publication number: 20140283523Abstract: A system includes a gas turbine engine having a combustor, and a fuel blending system. The fuel blending system further includes a first fuel supply configured to supply a first fuel, a second fuel supply configured to supply a second fuel, a first fuel circuit, a second fuel circuit, and a controller. The first fuel circuit may be configured to blend the first fuel and the second fuel to form a first to form a first fuel mixture. The second fuel circuit may be configured to blend the first fuel and the second fuel to form a second fuel mixture. The controller may be configured to regulate blending of the first fuel mixture and the second fuel mixture based on a measured operating parameter of the combustor.Type: ApplicationFiled: March 21, 2013Publication date: September 25, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Arvind Venugopal Menon, Alan Meier Truesdale, Abhijit Prabhakar Kulkarni, Predrag Popovic
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Publication number: 20140260309Abstract: A system includes a gas turbine engine having a combustor, and a fuel blending system. The fuel blending system further includes a first fuel supply configured to supply a first fuel, a second fuel supply configured to supply a second fuel, a first fuel circuit, a second fuel circuit, and a controller. The first fuel circuit may be configured to blend the first fuel and the second fuel to form a first fuel mixture. The second fuel circuit may be configured to blend the first fuel and the second fuel to form a second fuel mixture. The controller may be configured to regulate blending of the first fuel mixture and the second fuel mixture based on a measured composition of the first fuel.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Arvind Venugopal Menon, Alan Meier Truesdale, Abhijit Prabhakar Kulkarni, Predrag Popovic
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Publication number: 20140260302Abstract: The present application and the resultant patent provide a diffusion combustor fuel nozzle for a gas turbine engine. The fuel nozzle may include one or more gas fuel passages for one or more flows of gas fuel, a swirler surrounding the one or more gas fuel passages and positioned about a downstream face of the fuel nozzle, a number of swirler gas fuel ports defined in the swirler, and a number of downstream face gas fuel ports defined in the downstream face of the fuel nozzle. The swirler may include a number of swirl vanes and a number of air chambers defined between adjacent swirl vanes. The present application and the resultant patent further provide a method of operating a diffusion combustor fuel nozzle of a gas turbine engine.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Arvind Venugopal Menon, Gilbert Otto Kraemer, Predrag Popovic, Abinash Baruah
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Publication number: 20130263605Abstract: The present application thus provides a fuel nozzle for use with one or more flows of fuel and a flow of air in a combustor. The fuel nozzle may include one or more gas fuel passages for the one or more of flows of fuel, a swirler with one or more air chambers therein surrounding the gas fuel passages, and a collar with one or more curtain slots surrounding the swirler. The flow of air is divided between a swirler flow through the air chambers and a curtain flow through the curtain slots.Type: ApplicationFiled: April 4, 2012Publication date: October 10, 2013Applicant: GENERAL ELECTRICInventors: Abinash Baruah, Gilbert Otto Kraemer, Predrag Popovic, Arvind Venugopal Menon
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Publication number: 20130189632Abstract: The present application provides a fuel nozzle for mixing a flow of fuel and a flow of air. The fuel nozzle may include a downstream face, a number of fuel passages positioned about the downstream face for the flow of fuel, and a nozzle collar position about the downstream face. The nozzle collar may include a number of air vanes for the flow of air and one or more purge holes therethrough.Type: ApplicationFiled: January 23, 2012Publication date: July 25, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Arvind Venugopal Menon, Ilya Aleksandrovich Slobodyanskiy, Abinash Baruah
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Patent number: 6817640Abstract: The wafer clamping mechanism comprises a linkage mechanism and a wafer contact point coupled to the linkage mechanism. The linkage mechanism includes a four-bar linkage having: a first link having a first fixed pivot and a first floating pivot remote from the first fixed pivot; a second link having a second fixed pivot and a second floating pivot remote from the second fixed pivot; and a third link having a first coupling pivot rotatably coupled to the first floating pivot, and having a second coupling pivot rotatably coupled to the second floating pivot. In use motion of the linkage mechanism causes the wafer contact point to clamp a wafer.Type: GrantFiled: June 28, 2001Date of Patent: November 16, 2004Assignee: Applied Materials, Inc.Inventors: Venugopal Menon, Damon Keith Cox
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Patent number: 6682113Abstract: The wafer clamping apparatus is disclosed including a cam rotatably coupled to a base plate. The cam is configured to couple with a robot arm. The clamping apparatus also includes a rotating clamp mechanism rotatably coupled to the base plate about a single fixed point. A biasing mechanism, coupled to the rotating clamp mechanism, urges the rotating clamp mechanism towards a clamped position. The rotating clamp mechanism is configured to interact with the cam to engage and disengage the rotating clamp mechanism from the clamped position. The rotating clamp mechanism preferably comprises a hub rotatably coupled to the base plate and a clamping arm and cam follower extending from the hub. The clamping arm is configured to clamp a wafer when the rotating clamp mechanism is in the clamped position, while the cam follower is configured to interact with the cam.Type: GrantFiled: November 16, 2001Date of Patent: January 27, 2004Assignee: Applied Materials, Inc.Inventors: Damon Keith Cox, Venugopal Menon
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Publication number: 20030094824Abstract: The wafer clamping apparatus is disclosed including a cam rotatably coupled to a base plate. The cam is configured to couple with a robot arm. The clamping apparatus also includes a rotating clamp mechanism rotatably coupled to the base plate about a single fixed point. A biasing mechanism, coupled to the rotating clamp mechanism, urges the rotating clamp mechanism towards a clamped position. The rotating clamp mechanism is configured to interact with the cam to engage and disengage the rotating clamp mechanism from the clamped position. The rotating clamp mechanism preferably comprises a hub rotatably coupled to the base plate and a clamping arm and cam follower extending from the hub. The clamping arm is configured to clamp a wafer when the rotating clamp mechanism is in the clamped position, while the cam follower is configured to interact with the cam.Type: ApplicationFiled: November 16, 2001Publication date: May 22, 2003Applicant: Applied Materials, Inc.Inventors: Damon Keith Cox, Venugopal Menon
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Publication number: 20030001535Abstract: The wafer clamping mechanism comprises a linkage mechanism and a wafer contact point coupled to the linkage mechanism. The linkage mechanism includes a four-bar linkage having: a first link having a first fixed pivot and a first floating pivot remote from the first fixed pivot; a second link having a second fixed pivot and a second floating pivot remote from the second fixed pivot; and a third link having a first coupling pivot rotatably coupled to the first floating pivot, and having a second coupling pivot rotatably coupled to the second floating pivot. In use motion of the linkage mechanism causes the wafer contact point to clamp a wafer.Type: ApplicationFiled: June 28, 2001Publication date: January 2, 2003Applicant: Applied Materials, Inc.Inventors: Venugopal Menon, Damon Keith Cox