Patents by Inventor Ramkumar Subramanian

Ramkumar Subramanian 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: 7943289
    Abstract: The invention provides systems and processes that form the inverse (photographic negative) of a patterned first coating. The patterned first coating is usually provided by a resist. After the first coating is patterned, a coating of a second material is provided thereover. The uppermost layer of the second coating is removed, where appropriate, to expose the patterned first coating. The patterned first coating is subsequently removed, leaving the second coating material in the form of a pattern that is the inverse pattern of the first coating pattern. The process may be repeated with a third coating material to reproduce the pattern of the first coating in a different material. Prior to applying the second coating, the patterned first coating may be trimmed by etching, thereby reducing the feature size and producing sublithographic features. In addition to providing sublithographic features, the invention gives a simple, efficient, and high fidelity method of obtaining inverse coating patterns.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: May 17, 2011
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Bharath Rangarajan, Michael K. Templeton, Ramkumar Subramanian
  • Publication number: 20110043535
    Abstract: A bitmap may be transformed from one color scheme to another. In one example, the bitmap is used as part of a user interface (UI), and the colorization is performed to reflect a user's (or some other entity's) choice of color scheme. To perform the colorization, a bitmap may be converted from the red-green-blue (RGB) color space to the hue-saturation-lightness (HSL) color space. The hue may then be rotated toward the selected color scheme. Lightness and alpha (opacity) may be gamma-adjusted toward the selected color scheme. Saturation may be linearly adjusted upward or downward in the direction of the selected color scheme. The transformed HSL representation of the image may then be converted from the HSL space back to the RGB space. The new RGB bitmap may then be used to render one or more UI elements.
    Type: Application
    Filed: August 18, 2009
    Publication date: February 24, 2011
    Applicant: MICROSOFT CORPORATION
    Inventors: Paul J. Kwiatkowski, Ramkumar Subramanian, Robert A. Goins, Jeremy S. Knudsen, Lincoln K. Uyeda, Gary S. Henderson, Peter S. Ponomarev
  • Patent number: 7799514
    Abstract: Disclosed are methods for eliminating and/or mitigating the formation of footing and/or T-tops in a resist pattern. A substrate with or without an antireflective coating layer may be treated with an acidic composition prior to the formation of a resist layer. The acid treatment prevents the loss of photo generated acid from the resist by either quenching and/or neutralizing the bases, and thereby reduces the formation of footing. The surface of a resist layer which has been irradiated may be treated with an acidic composition prior to post-exposure bake. The acid treatment prevents the loss of photo generated acid from the resist by either compensating for the evaporation and/or neutralization of the bases and thereby prevents the formation of T-tops.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: September 21, 2010
    Assignee: Globalfoundries Inc
    Inventors: Ramkumar Subramanian, Bhanwar Singh, Gilles Amblard
  • Publication number: 20100010703
    Abstract: A guidance system for a mobile machine is disclosed. The guidance system may have a scanning device configured to generate a signal indicative of a lateral distance from the machine to a roadway marker, a locating device configured to determine a geographical location of the machine, and a controller in communication with the scanning device and the locating device. The controller may be configured to receive a desired lateral distance from the machine to the roadway marker, and to compare the desired lateral distance to the actual lateral distance. The controller may further be configured to implement a response to the comparison based on the geographical location.
    Type: Application
    Filed: July 8, 2008
    Publication date: January 14, 2010
    Inventors: Robert M. Coats, Michael Sean McDaniel, David J. Edwards, Ramkumar Subramanian, Kenneth L. Stratton
  • Patent number: 7604903
    Abstract: A mask is provided to be used with nanoprint lithography processes to facilitate reproduction of small features required for the production of integrated circuits. A translucent substrate is provided along with one or more three-dimensional features that include one or more vertical sidewalls. An absorbing material is deposited upon one or more of the vertical sidewalls so that light in an incident direction to an upper surface of the substrate will be absorbed by the absorbing material, resulting in light blocking features. One or more horizontal surfaces are formed upon one or more of the three-dimensional features, which allow light rays to exit a lower surface of the substrate unobstructed by the absorbing material.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: October 20, 2009
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Bhanwar Singh, Srikanteswara Dakshina-Murthy, Khoi A. Phan, Bharath Rangarajan, Ramkumar Subramanian
  • Publication number: 20090259401
    Abstract: A collision avoidance system for a machine is disclosed. The collision avoidance system has a first obstacle detection system. The first obstacle detection system is configured to detect a first obstacle and generate a corresponding first signal. Additionally, the collision avoidance system has an operator interface. The operator interface has a display configured to communicate visual information to an operator. The operator interface also has an input device configured to receive selections from the operator and generate a corresponding second signal. In addition, the collision avoidance system has a controller. The controller is in communication with the first obstacle detection system and the operator interface. The controller is configured to control the display to provide a first dangerous obstacle warning to the operator, based on the first signal.
    Type: Application
    Filed: April 15, 2008
    Publication date: October 15, 2009
    Inventors: David Edwards, David Robert Pavlik, Ramkumar Subramanian, Robert Martin Coats
  • Publication number: 20090259400
    Abstract: A collision avoidance system for a machine is disclosed. The collision avoidance system has a first obstacle detection system. The first obstacle detection system is configured to detect a first obstacle and generate a corresponding first signal. Additionally, the collision avoidance system has an operator interface. The operator interface has a display configured to communicate visual information to an operator. In addition, the collision avoidance system has an interface module configured to detect a status of the machine and generate a corresponding second signal. The collision avoidance system also has a controller. The controller is in communication with the first obstacle detection system, the operator interface, and the interface module. The controller is configured to control the display to indicate a dangerous obstacle detection to the operator, based on the first and second signals.
    Type: Application
    Filed: April 15, 2008
    Publication date: October 15, 2009
    Inventors: Robert Martin Coats, David Robert Pavlik, Ramkumar Subramanian, David Edwards
  • Patent number: 7591902
    Abstract: The present invention provides a system and methodology for dummy-dispensing resist though a dispense head while mitigating waste associated with the dummy-dispense process. The dummy dispensed resist is returned to a reservoir from which it was taken. Between substrate applications, the dispense head can be positioned to dispense resist into a return line. The flow of resist from the dispense head keeps resist from drying at the dispense head. By funneling the dummy-dispensed resist into a return line with low volume, for example, waste from the dummy-dispensing process can be mitigated.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: September 22, 2009
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Bharath Rangarajan, Ramkumar Subramanian, Khoi A. Phan, Ursula Q. Quinto, Michael T. Templeton
  • Patent number: 7554522
    Abstract: A computing environment can dynamically respond to user preferences and personal abilities by enabling computer users to configure their computing experience by implicitly gathering information about the users' needs. The system can detect users' issues during the natural course of interaction with the system and offer to make adjustments to make their tasks simpler and more enjoyable. The system can allow for the configuration of settings that can impact users' abilities to receive important information from the system or provide input to the system.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: June 30, 2009
    Assignee: Microsoft Corporation
    Inventors: Robert E. Sinclair, II, Gilma Annuska Perkins, Michael Edward Dulac Winser, Ramkumar Subramanian, Paul Reid
  • Patent number: 7465953
    Abstract: The present invention includes single electron structures and devices comprising a substrate having an upper surface, one or more dielectric layers formed on the upper surface of the substrate and having at least one exposed portion, at least one monolayer of self-assembling molecules attracted to and in contact with the at least one exposed portion of only one of the one or more dielectric layers, one or more nanoparticles attracted to and in contact with the at least one monolayer, and at least one tunneling barrier in contact with the one or more nanoparticles. Typically, the single electron structure or device formed therefrom further comprise a drain, a gate and a source to provide single electron behavior, wherein there is a defined gap between source and drain and the one or more nanoparticles is positioned between the source and drain.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: December 16, 2008
    Assignee: Board of Regents, The University of Texas System
    Inventors: Seong Jin Koh, Choong-Un Kim, Liang-Chieh Ma, Ramkumar Subramanian
  • Patent number: 7449348
    Abstract: The present invention relates generally to photolithographic systems and methods, and more particularly to systems and methodologies that facilitate compensating for retrograde feature profiles on an imprint mask. An aspect of the invention generates feedback information that facilitates control of imprint mask feature profile via employing a scatterometry system to detect retrograde feature profiles, and mitigating the retrograde profiles via a spacer etchback procedure.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: November 11, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian, Khoi A. Phan
  • Patent number: 7384569
    Abstract: Disclosed are photolithographic systems and methods, and more particularly systems and methodologies that enhance imprint mask feature resolution. An aspect generates feedback information that facilitates control of imprint mask feature size and resolution via employing a scatterometry system to detect resolution enhancement need, and decreasing imprint mask feature size and increasing resolution of the imprint mask via a trim etch procedure.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: June 10, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian
  • Patent number: 7386162
    Abstract: The present invention relates generally to photolithographic systems and methods, and more particularly to systems and methodologies that facilitate compensating for imprint mask critical dimension error(s). An aspect of the invention generates feedback information that facilitates control of imprint mask critical dimension via employing a scatterometry system to detect imprint mask critical dimension error, and mitigating the error via a spacer etchback procedure.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: June 10, 2008
    Assignee: Advanced Micro Devices, Inc
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian
  • Patent number: 7381278
    Abstract: Disclosed are immersion lithography methods involving irradiating a first photoresist through a lens and an immersion liquid, the immersion liquid contacting the lens and the first photoresist in a first apparatus; contacting the lens with a supercritical fluid in a second apparatus; and irradiating a second photoresist through the lens and an immersion liquid, the immersion liquid contacting the lens and the second photoresist in the first apparatus.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: June 3, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Ramkumar Subramanian, Bhanwar Singh, Khoi A Phan, Srikanteswara Dakshina-Murthy
  • Patent number: 7376259
    Abstract: The present invention relates generally to photolithographic systems and methods, and more particularly to systems and methodologies that modify an imprint mask. An aspect of the invention generates feedback information that facilitates control of imprint mask feature height via employing a scatterometry system to detect topography variation and, decreasing imprint mask feature height in order to compensate for topography variation.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: May 20, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian
  • Patent number: 7374654
    Abstract: A method of making an organic memory cell which comprises two electrodes with a controllably conductive media between the two electrodes is disclosed. The present invention involves providing a dielectric layer having formed therein one or more first electrode pads; removing a portion of the first electrode pad to form a recessed area on top of the pads and in the dielectric layer using reverse electroplating; forming a controllably conductive media over the first electrode pad in the recessed area; and forming a second electrode over the conductive media. The controllably conductive media contains an organic semiconductor layer and a passive layer.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: May 20, 2008
    Assignee: Spansion LLC
    Inventors: Mark S. Chang, Sergey D. Lopatin, Ramkumar Subramanian
  • Patent number: 7368225
    Abstract: There is provided a method of making plurality of features in a first layer. A photoresist layer is formed over the first layer. Dense regions in the photoresist layer are exposed through a first mask under a first set of illumination conditions. Isolated regions in the photoresist layer are exposed through a second mask different from the first mask under a second set of illumination conditions different from the first set of illumination conditions. The exposed photoresist layer is patterned and then the first layer is patterned using the patterned photoresist layer as a mask.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: May 6, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Ramkumar Subramanian, Scott A. Bell, Todd P. Lukanc, Marina V. Plat, Uzodinma Okoroanyanwu, Hung-Eil Kim
  • Patent number: 7309659
    Abstract: The disclosure provides methods to mitigate and/or eliminate problems associated with removal of carbon-based resists from organic low k dielectrics. The methods include forming an organic low k dielectric layer over a semiconductor substrate, forming a capping layer over the organic low k dielectric layer, forming a silicon-containing resist over the capping layer, patterning the silicon-containing resist layer to expose portions of the capping layer and to form a patterned silicon oxide layer, removing the organic low k dielectric layer to form one or more openings, and removing the patterned silicon oxide layer. The silicon-containing resist facilitates efficient patterning of the organic low k-dielectric layers, and thereby increases the performance and cost-effectiveness of semiconductor devices fabricated using organic low k dielectrics.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: December 18, 2007
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Ramkumar Subramanian, Calvin T. Gabriel, Bhanwar Singh
  • Patent number: 7310155
    Abstract: A system that facilitates extraction of line edge roughness measurements that are independent of proprietorship of a metrology device comprises a structure patterned onto silicon with known line edge roughness values associated therewith. A metrology device obtains line edge roughness measurements from the structure, and a correcting component generates an inverse function based upon a comparison between the known line edge roughness values and the measured line edge roughness values. The metrology device can thereafter measure line edge roughness upon a second structure patterned on the silicon, and the inverse function can be applied to such measured line edge roughness values to enable obtainment of line edge roughness measurements that are independent of proprietorship of the metrology device.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: December 18, 2007
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Luigi Capodieci, Amit P. Marathe, Bhanwar Singh, Ramkumar Subramanian
  • Publication number: 20070283883
    Abstract: A system and method are provided to facilitate dual damascene interconnect integration with two imprint acts. The method provides for creation of a pair of translucent imprint molds containing the dual damascene pattern to be imprinted. The first imprint mold of the pair contains the via features of the dual damascene pattern and the second imprint mold of the pair contains the trench features. The via feature imprint mold is brought into contact with a first imaging layer deposited upon a first transfer layer which is deposited upon a dielectric layer of a substrate. The trench feature imprint mold is brought into contact with a second imaging layer deposited upon a second transfer layer which is deposited upon the first imaging layer of the substrate. When each imaging layer is exposed to a source of illumination, it cures with a structure matching the features of the corresponding imprint mold.
    Type: Application
    Filed: April 30, 2007
    Publication date: December 13, 2007
    Applicant: ADVANCED MICRO DEVICES, INC.
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian