Patents by Inventor Putul D. Patel

Putul D. Patel 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: 5144341
    Abstract: A thermal ink jet printer utilizes a printhead whose electrical connections to the heating elements used to expel the ink droplets has been modified to reduce the effects of parasitic resistance of a first power bus when a number of resistors are simultaneously addressed. The first power bus has been modified by forming and interconnecting to it a second power bus using a low resistance connection which is formed to crossover, or under, a common return. The second power bus is connected at each end to a predetermined voltage, while the first power bus is connected at each end through a series ballast resistor to the same predetermined voltage.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: September 1, 1992
    Assignee: Xerox Corporation
    Inventors: Abdul M. El Haten, Steven A. Buhler, Putul D. Patel