Patents by Inventor Keith R. Brafford

Keith R. Brafford 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: 8364315
    Abstract: The present invention provides modified droplet actuator systems, software, and software-executed methods for use in droplet actuator operation and droplet actuator systems that are configured and programmed to execute such software. An aspect of the software components of the invention is an interface description file for each hardware component of a microfluidics system that allows hardware components to be changed without modifying the program for performing droplet operations protocols. Another aspect of the software components of the invention is the establishment of electrode-to-electrode relationships and other aspects of droplet actuator configurations, which may be used when programming droplet operations protocols. Another aspect of the software components of the invention is a physical design library of predefined electrode elements that may be used by a droplet actuator designer when constructing a layout of electrodes.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: January 29, 2013
    Assignee: Advanced Liquid Logic Inc.
    Inventors: Ryan A. Sturmer, Gregory F. Smith, Michael Fogleman, Keith R. Brafford, Sai Ram Rongali
  • Publication number: 20110213499
    Abstract: The present invention provides modified droplet actuator systems, software, and software-executed methods for use in droplet actuator operation and droplet actuator systems that are configured and programmed to execute such software. An aspect of the software components of the invention is an interface description file for each hardware component of a microfluidics system that allows hardware components to be changed without modifying the program for performing droplet operations protocols. Another aspect of the software components of the invention is the establishment of electrode-to-electrode relationships and other aspects of droplet actuator configurations, which may be used when programming droplet operations protocols. Another aspect of the software components of the invention is a physical design library of predefined electrode elements that may be used by a droplet actuator designer when constructing a layout of electrodes.
    Type: Application
    Filed: August 13, 2009
    Publication date: September 1, 2011
    Applicant: ADVANCED LIQUID LOGIC, INC.
    Inventors: Ryan A. Sturmer, Gregory F. Smith, Michael Fogleman, Keith R. Brafford, Sai Ram Rongali
  • Patent number: 7939021
    Abstract: A droplet actuator with cartridge is provided. According to one embodiment, a sample analyzer is provided and includes an analyzer unit comprising electronic or optical receiving means, a cartridge comprising self-contained droplet handling capabilities, and a wherein the cartridge is coupled to the analyzer unit by a means which aligns electronic and/or optical outputs from the cartridge with electronic or optical receiving means on the analyzer unit. According to another embodiment, a sample analyzer is provided and includes a sample analyzer comprising a cartridge coupled thereto and a means of electrical interface and/or optical interface between the cartridge and the analyzer, whereby electrical signals and/or optical signals may be transmitted from the cartridge to the analyzer.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: May 10, 2011
    Assignees: Advanced Liquid Logic, Inc., Duke University
    Inventors: Gregory F. Smith, Ryan A. Sturmer, Philip Y. Paik, Vijay Srinivasan, Michael G. Pollack, Vamsee K. Pamula, Keith R. Brafford, Richard M. West
  • Patent number: 7822510
    Abstract: Systems for controlling a droplet microactuator are provided. According to one embodiment, a system is provided and includes a controller, a droplet microactuator electronically coupled to the controller, and a display device displaying a user interface electronically coupled to the controller, wherein the system is programmed and configured to permit a user to effect a droplet manipulation by interacting with the user interface. According to another embodiment, a system is provided and includes a processor, a display device electronically coupled to the processor, and software loaded and/or stored in a storage device electronically coupled to the controller, a memory device electronically coupled to the controller, and/or the controller and programmed to display an interactive map of a droplet microactuator.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: October 26, 2010
    Assignees: Advanced Liquid Logic, Inc., Duke University
    Inventors: Philip Y. Paik, Michael G. Pollack, Ryan A. Sturmer, Gregory F. Smith, Keith R. Brafford, Vamsee K. Pamula
  • Publication number: 20080281471
    Abstract: A droplet actuator with cartridge is provided. According to one embodiment, a sample analyzer is provided and includes an analyzer unit comprising electronic or optical receiving means, a cartridge comprising self-contained droplet handling capabilities, and a wherein the cartridge is coupled to the analyzer unit by a means which aligns electronic and/or optical outputs from the cartridge with electronic or optical receiving means on the analyzer unit. According to another embodiment, a sample analyzer is provided and includes a sample analyzer comprising a cartridge coupled thereto and a means of electrical interface and/or optical interface between the cartridge and the analyzer, whereby electrical signals and/or optical signals may be transmitted from the cartridge to the analyzer.
    Type: Application
    Filed: August 14, 2007
    Publication date: November 13, 2008
    Inventors: Gregory F. Smith, Ryan A. Sturmer, Philip Y. Paik, Vijay Srinivasan, Michael G. Pollack, Vamsee K. Pamula, Keith R. Brafford, Richard M. West
  • Patent number: 6438146
    Abstract: A method, apparatus and program product for increasing the performance of an asynchronous serial communications port by mulitplexing a plurality of communication pipes established between the user application programs and the serial port. To the user application programs, each pipe is treated as a separate output port. A thread of code is started associated with each pipe. On receipt of data by any pipe, all of the pipes are checked to determine if a predetermined amount of data has been queued for any pipe. If so, a packet of data is created containing queued data from all pipes or null data for a pipe with no queued data. A bitmap is generated specifying which fields contain data and which contain null data. Each field is associated with a specific pipe. The packet is routed over the computers serial port to a multiplexer which reads the bitmap, unpacks the data, and routes any contained data to the output port of the multiplexer which is associated with the respective pipe.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: August 20, 2002
    Assignee: International Business Machines Corporation
    Inventor: Keith R. Brafford