Patents by Inventor John J. Ignatowski

John J. Ignatowski 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).

  • Electrical monitoring of flip-chip hybridization
    Patent number: 4803422
    Abstract: An array of photosensors is electrically connected to an array of individually readable capacitive storage cells in a one-to-one correspondence, each photosensor and each storage cell having a parasitic resistance. The interconnection is performed in an environment which is adapted to minimize photon impingement upon said photosensors cells and thereby minimize photocurrent. Each connection, if successfully made, places the parasitic resistance of a photosensor in electrical parallelism with the parasitic resistance of its corresponding capacitive storage cell.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: February 7, 1989
    Assignee: General Dynamics, Pomona Division
    Inventor: John J. Ignatowski