Patents by Inventor Craig D. Hutchens

Craig D. Hutchens 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).

  • System and method for selectively laser processing a target structure of one or more materials of a multimaterial, multilayer device
    Patent number: 5265114
    Abstract: A laser system and processing method exploits the absorption contrast between the materials from which a link (12) and an underlying substrate (22) are made to effectively remove the link from the substrate. Laser output in a wavelength range of 1.2 to 2.0 .mu.m (30) optimizes the absorption contrast between many high conductivity materials (e.g., metals) and silicon substrates and permits the use of laser output in a wider range of energy or power levels, pulse widths, without risking damage to the silicon substrates or adjacent circuit structures. Existing link processing laser systems can be readily modified to operate in the 1.2 to 3.0 .mu.m range.
    Type: Grant
    Filed: September 10, 1992
    Date of Patent: November 23, 1993
    Assignee: Electro Scientific Industries, Inc.
    Inventors: Yunlong Sun, Craig D. Hutchens