Patents by Inventor Rezaul Karim

Rezaul Karim 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).

  • DUAL AXIS SOLAR TRACKER APPARATUS AND METHOD
    Publication number: 20130098425
    Abstract: The dual axis solar tracker apparatus and method uses an azimuth actuator to adjust the azimuth of an attached solar panel and an elevation actuator to adjust the elevation of a panel seat holding the solar panel to track the azimuth and elevation of the sun as it moves through the sky. The panel seat rotatably supports the solar panel with two pins, and a support structure supports the panel seat with an elevation tracking pivot. The actuators are controlled with an actuator controller circuit that is controlled by a microcontroller. The microcontroller uses information about latitude, longitude, time of day and date to control the actuators and track the motion of sun without the need for sensors.
    Type: Application
    Filed: October 19, 2011
    Publication date: April 25, 2013
    Applicant: KING SAUD UNIVERSITY
    Inventors: NOWSHAD AMIN, MOHAMMAD REZAUL KARIM, MAMDOOH S. AL-SAUD, ABDULRAHMAN M. AL-AHMARI
  • Wound Healing Device, Method for Making the Same and Method for Treating a Wound
    Publication number: 20120251612
    Abstract: A wound healing device includes a mat of aligned nanofibers of polyaniline, o-aminobenzenesulfonic acid copolymer, polyvinyl alcohol and chitsosan oligossacaride. Method for fabricating the mat and treating wounds are also disclosed.
    Type: Application
    Filed: March 28, 2011
    Publication date: October 4, 2012
    Inventors: Mohammad Rezaul Karim, Abdulrahman M. Al-Ahmari, Saeed M. Al-Zahrani, Jeong Hyun Yeum, Kil-Soo Kim
  • Method and apparatus to monitor an output speed sensor during operation of an electro-mechanical transmission
    Patent number: 8027771
    Abstract: There is provided a method to monitor a sensing system adapted to monitor an output of an electro-mechanical transmission. This includes monitoring rotational speed of a wheel operatively connected to a driveline operatively connected to the output of the electro-mechanical transmission. A first expected output of the transmission is determined based upon the output of the first sensor. A second expected output of the transmission is determined based upon a rotational speed of a torque-generative device operatively connected to the transmission. The first and second expected outputs and an output of the sensing system adapted to monitor the output of the electro-mechanical transmission are compared.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: September 27, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Ryan D. Martini, Charles J. Van Horn, Peter E. Wu, Andrew M. Zettel, Rezaul Karim, Jeffrey R. Dec, Sailaja Paladugu
  • METHOD AND APPARATUS TO MONITOR AN OUTPUT SPEED SENSOR DURING OPERATION OF AN ELECTRO-MECHANICAL TRANSMISSION
    Publication number: 20090076679
    Abstract: There is provided a method to monitor a sensing system adapted to monitor an output of an electro-mechanical transmission. This includes monitoring rotational speed of a wheel operatively connected to a driveline operatively connected to the output of the electro-mechanical transmission. A first expected output of the transmission is determined based upon the output of the first sensor. A second expected output of the transmission is determined based upon a rotational speed of a torque-generative device operatively connected to the transmission. The first and second expected outputs and an output of the sensing system adapted to monitor the output of the electro-mechanical transmission are compared.
    Type: Application
    Filed: September 13, 2007
    Publication date: March 19, 2009
    Inventors: Ryan D. Martini, Charles J. Van Horn, Peter E. Wu, Andrew M. Zettel, Rezaul Karim, Jeffrey R. Dec, Sailaja Paladugu