Patents by Inventor Michael J. Bohan

Michael J. Bohan 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).

  • Scanning brush and method of use
    Patent number: 6897888
    Abstract: A scanning system uses a multi-beam brush having a widely separated beams, a modulator that controls intensity of pixels in scan beams, an optical system that minimizes scan line bow at the expense of non-uniform scanning beam velocity, and a timing generator that generates a pixel clock signal having a variable period that compensates for the non-uniformity of pixel velocity. The wide separation of scan beams permits the modulator to turn beams on or off with a direction of brightening or darkening in the cross-section of the beams being opposite to the scanning direction. A novel arrangement of the beams in the brush permits a uniform indexing step size to uniformly expose an image region.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: May 24, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Paul C. Allen, Michael J. Bohan, Morris H. Green, Henry Christopher Hamaker
  • Scanning brush and method of use
    Publication number: 20040165056
    Abstract: A scanning system uses a multi-beam brush having a widely separated beams, a modulator that controls intensity of pixels in scan beams, an optical system that minimizes scan line bow at the expense of non-uniform scanning beam velocity, and a timing generator that generates a pixel clock signal having a variable period that compensates for the non-uniformity of pixel velocity. The wide separation of scan beams permits the modulator to turn beams on or off with a direction of brightening or darkening in the cross-section of the beams being opposite to the scanning direction. A novel arrangement of the beams in the brush permits a uniform indexing step size to uniformly expose an image region.
    Type: Application
    Filed: February 25, 2004
    Publication date: August 26, 2004
    Inventors: Paul C. Allen, Michael J. Bohan, Morris H. Green, Henry Christopher Hamaker
  • Laser pattern generator
    Patent number: 6731320
    Abstract: A scanning system uses a multi-beam brush having a widely separated beams, a modulator that controls intensity of pixels in scan beams, an optical system that minimizes scan line bow at the expense of non-uniform scanning beam velocity, and a timing generator that generates a pixel clock signal having a variable period that compensates for the non-uniformity of pixel velocity. The wide separation of scan beams permits the modulator to turn beams on or off with a direction of brightening or darkening in the cross-section of the beams being opposite to the scanning direction. A novel arrangement of the beams in the brush permits a uniform indexing step size to uniformly expose an image region.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: May 4, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Paul C. Allen, Michael J. Bohan, Morris H. Green, Henry Christopher Hamaker