Patents by Inventor Chakravarty Tapas

Chakravarty Tapas 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).

  • Miniaturized UHF RFID tag for implantable medical device
    Patent number: 8690068
    Abstract: This invention relates to a novel architecture of a passive RFID (Radio-Frequency Identification) tag which is highly miniature in size, capable of metal mounting and suitable for global operation in the entire UHF band (860 MHz to 960 MHz) without necessity of territory specific optimization of the antenna design layout. This invention envisages a novel antenna design that consists of a circular or rectangular microstrip antenna of ultra-small size (??/50), which is suitably loaded in shunt by lumped components resistor (R), inductor (L) and capacitor (C). The feed point, feed layout and the loading values are so optimized that a single tag will display optimum performance in all the territories. This invention relates to a method of encapsulating the passive tag with radio transparent materials like Radel® R, as well as a metal backplane so that the encapsulated tag can withstand autoclaving while maintaining the required performance.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: April 8, 2014
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Michael Mathews, Chakravarty Tapas, Steven Tethrake, Robin Turner, Kuldeep Tyagi
  • MINIATURIZED UHF RFID TAG FOR IMPLANTABLE MEDICAL DEVICE
    Publication number: 20130306740
    Abstract: This invention relates to a novel architecture of a passive RFID (Radio-Frequency Identification) tag which is highly miniature in size, capable of metal mounting and suitable for global operation in the entire UHF band (860 MHz to 960 MHz) without necessity of territory specific optimization of the antenna design layout. This invention envisages a novel antenna design that consists of a circular or rectangular microstrip antenna of ultra-small size (??/50), which is suitably loaded in shunt by lumped components resistor (R), inductor (L) and capacitor (C). The feed point, feed layout and the loading values are so optimized that a single tag will display optimum performance in all the territories. This invention relates to a method of encapsulating the passive tag with radio transparent materials like Radel® R, as well as a metal backplane so that the encapsulated tag can withstand autoclaving while maintaining the required performance.
    Type: Application
    Filed: May 21, 2012
    Publication date: November 21, 2013
    Applicant: WARSAW OTHROPEDIC, INC.
    Inventors: Michael Mathews, Chakravarty Tapas, Steven Tethrake, Robin Turner, Kuldeep Tyagi